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·Ok i have a 1971 mustang fastback, i have modified everything on it, suspension brakes, a new engine, which is a supercharged 429 cobra jet, which i had dyno for over 600 hp, i was wondering what would happen when a mustang like mine would race a twin turbo manual supra, the mustang would be lighter of course closer to 3000 lbs instead of 3400 lbs, so i want some opinions..