Ford Mustang 1965 – Ringbrothers Full Carbon Fiber Body Mustang!

The Ringbrothers didn’t restore this 1965 Mustang Fastback, they rebuilt it almost entirely in carbon fiber, widened its stance by four inches, and dropped nearly 700 pounds in the process. Under the hood sits a 959-horsepower LS7-based engine that has nothing to do with Ford, making this one of the more unconventional Mustang builds to ever hit the SEMA floor. It raises a real question about how much of a car can change before it stops being what it started as.

At the 2015 SEMA show, The Ringbrothers brought out their full carbon-fiber first generation Mustang body for the world to see. What are your thoughts on it?

At the 2015 SEMA show, a Wisconsin shop unveiled a 1965 Mustang that looked almost nothing like the car it started as, and weighed nearly 700 pounds less because of it. The Ringbrothers had stripped away everything but the floors and replaced it with a body built entirely from carbon fiber, widened the fenders and doors by four inches, and finished the whole thing in a color that seemed to shift between green and gray depending on the light. Underneath all that carbon sat an engine choice that would make Mustang purists wince, borrowed from a rival brand entirely. Was it still a Mustang at that point, or something else wearing a Mustang’s silhouette?

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Building a Body From Scratch, Not Restoring One

Rather than restoring an original 1965 Mustang Fastback, the Ringbrothers used the car’s frame as a starting point and built an entirely new carbon fiber body around it, widening the fenders and doors by four inches for a genuine widebody stance. The finished body panels, everything except the floors, were carbon fiber, shaving roughly 700 pounds off the car’s weight compared to a steel-bodied original.

The Engine Choice That Raised Eyebrows

Instead of a Ford small-block or big-block, the build was powered by a 427-cubic-inch LS7 engine fitted with a Whipple supercharger, producing 959 horsepower and 858 lb-ft of torque, numbers that would be extreme in any muscle car, let alone a 1965 body style. Power reached the rear wheels through a Tremec T56 six-speed manual and a custom driveshaft into a Ford nine-inch rear end, giving the finished car a genuine mix of pedigrees under one roof.

How It Stacked Up at SEMA

Nicknamed “Espionage” for its color-shifting Spy Green Glasurit paint and its unconventional Chevrolet heart hidden under a Ford body, the build was named one of ten finalists in SEMA’s Battle of the Builders competition that year, a serious achievement given how many high-dollar builds compete for that recognition annually.

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