what's funny to me is that you guys assume you're getting 500hp out of a car, is that rear wheel horses or crank horses? and the reason I say stock is becuase you're starting off with TWO different baselines, you can't compare two cars that have different mods since one guy spent a shit load of money on turbos, nos, and whatever else you feel like tossing at a motor, and another who went and changed the crank throw, cams, pistons, and intake manifold and put other shit on it, which will give you two way different outputs... but you'll never prove a pile of shit Mustang *cobra or not it's still nothing compared to the ss camaros, go check some actual tests, not some bench racing facts* and when you're hauling around a HEAVY ass mustang that's pushing a "possible" 500horses, compared to a light 'vette pushing 419 (I'll use your numbers since I don't sit and digest numbers, just overall outcomes. plus I don't care for either car, but the vette is in the SUPER CAR ranks where the mustang is in the SPORTS CAR, with cars like Preludes, Celicas, and Eclipses)