Cordes Performance Racing built what it calls the world’s first F1A Procharged Shelby GT350, pushing 923 horsepower to the rear wheels on a stock bottom end using long-tube headers, an E85 fuel system, and a boosted flat-plane V8. Lined up against a nearly stock Corvette Z06 at Shifts3ctor’s California Airstrip Attack, the matchup tests whether a factory supercar can hang with a built one. The automatic-equipped Z06 adds an extra wrinkle most viewers will not expect.