Ride in the Baddest Buick Muscle Car Ever a 1970 GSX? Why Not!

Erika Perrye had only owned her 1970 Buick GSX for a few months when Lou Costabile caught up with her and husband Bob in Lake Zurich, Illinois — but she already had strong opinions on why Buick’s most overlooked muscle car beats the obvious choices. Finished in bold Saturn Yellow with the torque-heavy 455 V8, this GSX is one of the rarest performance cars Buick ever built. Find out how a rare yellow Buick turned her into a genuine muscle car fan.

Muscle car culture has a well-worn stereotype about who ends up behind the wheel of the loudest, most powerful cars on the lot, and Erika Perrye doesn’t fit it in the slightest — which is exactly what makes this particular Buick GSX story worth telling. She’d only owned the car for a couple of months by the time Lou Costabile caught up with her and her husband Bob in Lake Zurich, Illinois, but she already had a clear, specific answer for why she chose one of Buick’s rarest and most underrated muscle cars over the more obvious Chevelle or Camaro options everyone expects. The color alone tells you this isn’t a cookie-cutter purchase.

Buick’s Best-Kept Muscle Car Secret

The Buick GSX occupies a strange position in muscle car history: it was arguably the most focused, purpose-built performance car Buick ever produced, yet it remains genuinely overshadowed by the more famous muscle offerings from Chevrolet, Pontiac, and Dodge that came out of the same era. Introduced in 1970 as the performance flagship of the GS lineup, the GSX added stiffer suspension tuning, a functional hood-mounted tachometer, bold striping, and a genuinely aggressive stance to Buick’s existing GS platform, transforming what most people associated with comfortable, understated luxury into a legitimate street-racing threat. Low production numbers from the start have only made surviving examples scarcer with each passing decade, which is exactly the kind of rarity that turns casual buyers into serious collectors.

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The Engine That Backs Up the Attitude

Powering this particular GSX is Buick’s 455 cubic-inch V8, an engine that delivered genuinely class-leading torque figures in period — enough that Buick’s own marketing at the time leaned into the number rather than shying away from it. While horsepower figures often stole headlines during the muscle car era, torque is what actually launches a heavy car off the line and pins passengers into their seats, and the 455’s reputation for brutal low-end pull is precisely why period road testers and modern owners alike still rank it among the strongest factory engines of the entire muscle car era. Under the hood of a car this rare, that big-torque 455 is a huge part of the appeal for someone like Erika.

A Color Choice That Makes a Statement

The GSX’s Saturn Yellow paint isn’t a subtle choice, and that’s precisely the point. Buick offered the GSX in only a handful of colors, and Saturn Yellow — along with the equally bold Apollo White — became one of the two signature shades most associated with the model in enthusiast circles today. Finding a surviving example still finished in its original factory color, rather than a later repaint, adds meaningfully to a car’s value and desirability among serious Buick collectors. For Bob and Erika, that eye-catching yellow paint isn’t just cosmetic; it’s part of what makes the car instantly recognizable and unmistakably a GSX the moment it pulls up.

From New Owner to ‘Car Girl’ in a Matter of Months

By the time this video was filmed, Erika had owned the GSX for only a few months, having picked it up back in May, yet she already speaks about the car with the kind of confident familiarity that usually takes owners years to develop. Her own explanation for how she became genuinely passionate about muscle cars adds a personal dimension that a lot of car-spotting content skips entirely — this isn’t just footage of an interesting vehicle, it’s a conversation about how someone falls in love with a specific car and a specific hobby. Viewers picked up on that immediately, with several comments specifically praising her enthusiasm and expertise rather than treating the moment as a novelty.

Why the GSX Still Flies Under the Radar

Despite genuinely impressive performance credentials and legitimate rarity, the GSX has historically traded at lower prices than comparable Chevrolet, Pontiac, and Dodge muscle cars from the same era, a gap collectors and market analysts largely attribute to Buick’s broader brand image as a maker of comfortable, conservative cars for an older demographic. That perception has started shifting in recent years as more buyers do their homework and discover just how serious the GSX’s factory performance specifications actually were, but the model still represents relatively strong value for collectors chasing genuine muscle car performance without paying the premium attached to more famous nameplates from the same period.

What Makes a GSX Worth Buying Today

For anyone considering a GSX purchase today, originality is everything: a numbers-matching 455, factory-correct color, and documented ownership history all separate a genuinely valuable example from a car that’s simply been dressed up to look the part. Given how few GSXs Buick actually built, provenance carries even more weight than it does for higher-production muscle cars, where survivor counts make originality slightly less rare. Bob and Erika’s car, with its documented recent transfer and clear factory specification, represents exactly the kind of transparent history that serious Buick collectors look for before committing to a purchase. The hood-mounted tachometer alone is worth checking closely, since it was a functional GSX-specific feature rather than a cosmetic add-on, and its condition is one of the quicker ways to spot a genuine example versus a GS dressed up to look the part.

A Different Kind of Muscle Car Story

What makes this particular episode of ‘My Car Story’ stand out isn’t just the rarity of the GSX itself — it’s the reminder that muscle car ownership doesn’t fit a single mold, whether that’s who ends up behind the wheel or which nameplate ends up in the garage. Erika’s enthusiasm, paired with Bob’s obvious pride in the car, tells a more complete story than the spec sheet alone ever could, and it’s exactly the kind of human detail that keeps viewers coming back to Lou Costabile’s channel. Between the rare Saturn Yellow paint, the torque-heavy 455, and Erika’s genuine enthusiasm just months into ownership, this GSX has already earned its spot among the collection’s standouts — and it likely has decades of stories still ahead of it.

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