Project Cool Blue’s ’65 Coronet hides an 825-horsepower Ray Barton Hemi under a deliberately unremarkable exterior, but the trickiest part of staying invisible isn’t the engine, it’s feeding it fuel without giving anything away. The team turned to a fuel system originally built to solve the same problem in modern Corvettes, adapted to fit inside a decades-old stock gas tank. No visible fuel cell, no whining pump, no giveaway hanging underneath. Read on to find out how a shallow foam baffle keeps an 800-horsepower secret completely silent.