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Bob Carnes (the Bocar name comes from his christian name and surname) built his first Chevrolet-powered sportscar to compete in hill-climbs and road racing. The XP-4 was the first production model and it had a light tubular space frame with VW/Porsche front suspension, Chevrolet drum brakes and a live axle at the back. With a stunning fibreglass body, a 4600cc Chevrolet V8 engine and a short 2284mm (90 inch) wheelbase, it was a hot performer. The similar XP-5 that followed had better Buick 'Alfin' drum brakes. Bocars were sold in body only, kit and fully assembled for street and racing use.
The XP-6 was an experimental model with a 2640mm (104 inch) wheelbase and 450bhp Chevrolet V8 engine with a crank-driven Potvin supercharger on the front breathing through a modified Rochester fuel-injection system. It had Kurtis-style live axles at both ends.
The XP-7 was a production model that was similar to the XP-6, but with VW front suspension and an optional supercharger. The last Bocat was the Stilletto, which had a streamlined body that looked like a cross between a Lotus 11 and a Bonneville streamliner. It had the XP-6 chassis with live axles and a supercharged Chevrolet engine. Only a few Stillettos were made before a fire destroyed the factory in 1962.