The Chevrolet Camaro is unquestionably one of the most iconic American cars of all time, but it shares this high level of prestige with its big brother, the Corvette. These two-door sports cars from General Motors have shared real estate in dealership showrooms for decades, and even though they're not direct competitors, they do share similar characteristics and a similar spirit. So, when Ryan Duncan set out to rebuild his '68 Camaro, he decided to drop in the heart of a Corvette: an LS3 V8 motor. After all, a little sharing among siblings is a good thing.