I know for a fact that stock vs. stock, the cobra will usually win. 03 Mustang Cobra- 12.9 second 1/4. 95 Toyota supra turbo - 13.5 second 1/4mi.
http://www.albeedigital.com/supercou...0-60times.html Needless to say, if the cobra driver cant drive the supra will win. As far as modding goes, with a few bolt ons you can easily get 500hp out of a cobra, but as stated before, lacks top end speed because of the eaton supercharger. Needless to say, a turbo'd cobra would walk all over most modded supras. Dont say that im biased either because my first car was a supra, i still have it, it just needs a new motor