Believe it! 1970 Plymouth SuperBird barn find with 10,000 Original miles!

Roland Cassidy assumed the pitch was too good to be true: a numbers-matching 426 Hemi Superbird with 10,000 original miles, one owner, and a complete paper trail back to a Maine dealership in 1971. It had been sitting untouched in a Massachusetts barn since 1990. Read on to find out what he had to throw in to close the deal.

Some dreams are simple enough to fit in one sentence: find a Hemi car nobody’s touched in decades, buy it cheap, retire on the profit. Roland Cassidy, who runs Carroll Street Auto in New Hampshire, has heard that dream described to him more times than he can count, usually by people who’ve never actually gone looking for one. So when a tip led him to a Massachusetts barn holding a 1970 Plymouth Superbird, the winged, pointy-nosed homologation special Plymouth built in limited numbers purely to win NASCAR races, with a genuine Hemi under the hood and just 10,000 original miles on the clock, his first reaction wasn’t excitement. It was suspicion. The story, he figured, sounded far too good to be true, right up until he opened the barn door.

A Barn Built to Preserve, Not Just Store

Roland’s skepticism wasn’t unreasonable. The seller had built the car up as “10,000 mile, original, untouched, you should see this thing,” language that usually means either a genuine miracle or a wildly optimistic exaggeration. What made the difference this time was the barn itself: old but structurally sound, with a wooden floor specifically good at absorbing moisture rather than trapping it against the car’s underside, the kind of detail that separates a barn find worth pursuing from one that’s quietly rusted away underneath a layer of dust. Even Roland, who does appraisals professionally, wasn’t willing to trust the story until he’d seen the car with his own eyes.

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A Firm Price and a Negotiation Roland Almost Walked Away From

The seller, who’d bought the car new himself, wasn’t naive about what he had, he’d kept an eye on collector prices for years by watching the Barrett-Jackson classic car auctions on television, and he held firm on his asking price throughout the negotiation. Roland pushed back hard, pointing out that a car sitting untouched for this long was bound to need real mechanical work regardless of how clean it looked sitting still, and the back-and-forth stretched on longer than either man probably expected for what was, on paper, a straightforward cash deal. He didn’t get the price down. What he did manage to get was two extra pieces thrown into the deal: a 1970 Road Runner lift-off hood and a NASCAR cross-ram intake manifold dating back to the mid-1960s, both pulled from parts scattered around the same barn. Roland has since learned to recognize that same pattern in almost every serious barn find he chases: the owner who finally agrees to sell almost always does so on their own terms and their own timeline, not the buyer’s, and rushing the process tends to kill deals that patience would have closed.

Why the Car Had Been Sitting Since 1990

The Superbird had been parked since 1990 and hadn’t been started once in all the years since, according to the owner, who explained his reasoning plainly: the Hemi was simply too expensive to justify putting back on the road and actually driving. Rather than sink money into recommissioning a numbers-matching Hemi car just to drive it occasionally, he’d rather cash out and let someone else make that decision. It’s a rationale Roland has heard from plenty of long-term owners of genuinely valuable muscle cars, the car becomes too important to risk using for its intended purpose, so it simply stops moving instead.

Paperwork That Reads Like a Time Capsule

What separates this Superbird from countless barn-find stories that fall apart under scrutiny is the sheer completeness of its paper trail. The owner had held onto every piece of documentation since the car was new: the original 20-day plate and its accompanying registration, the contract, the insurance paperwork, the bill of sale, and the title itself. Records show the original owner purchased the car on February 21, 1971, more than a year after 1970 Superbirds first reached dealers, meaning this particular car had sat unsold on a dealership lot in Maine for roughly a year before anyone drove it home.

One Flat Tire, and Tires Nobody Makes Anymore

Beyond the paperwork, the physical car backed up every claim. It had exactly one flat tire, on the driver’s side, and all four were still the original F60x15 raised-white-letter Goodyear Polyglas tires that came on the car from the factory, a tire size and tread pattern that hasn’t been in production in decades, making an original set like this its own small piece of the car’s value. Finding a numbers-matching Hemi car is rare enough on its own; finding one that still rides on its original, unreplaced factory rubber after half a century is rarer still. Original Polyglas tires like these were discontinued by Goodyear decades ago, and reproduction versions built to the same specification didn’t reach the market again until specialty tire makers began catering to the muscle car restoration niche years later.

What B5 Blue and a 426 Hemi Actually Meant in 1971

Finished in B5 Blue, this Superbird left the factory with the genuine 426 Hemi, the Performance axle package, a tachometer, an AM radio, an automatic transmission, and Rallye wheels wrapped in those same raised-white-letter tires, a genuinely loaded specification for a car built primarily to satisfy NASCAR’s homologation rule, which required Plymouth to build a minimum number of street versions before the winged car could compete on the track. Plymouth ultimately built around 1,935 Superbirds for the 1970 model year — just over the 1,920-unit minimum NASCAR’s homologation rule required Plymouth to clear, making every surviving example, let alone a Hemi car with this kind of documentation, a genuine rarity. When the original owner finally bought it in February 1971, the sticker read $5,263.60, a substantial sum at the time for what was, on paper, just a mid-size Plymouth with an unusual nose and a giant rear wing.

The Kind of Find That Justifies Every Wasted Trip

For every barn Roland Cassidy walks into that turns out to hold nothing more than a rusted-out disappointment, a find like this one is the reason he keeps chasing tips that sound too good to be true. A genuine 426 Hemi Superbird, one owner, 10,000 original miles, a complete paper trail back to a Maine dealership, and two bonus parts most collectors would happily pay for on their own, it’s the exact combination that separates a career-defining find from just another rumor. Share your thoughts in the comments below.

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