It ain't purty, but i think if they COULD make it redline at 8 grand, it would do 450, at least at the flywheel. you open up EVERYTHING, put some solid lifters and all in there, redo the computer to actually be able to go that high, then it's possible. I bet it makes NOTHING below 4 grand though. All the exhaust would have to be redone, all the intake stuff. Did he say what heads? In any case, if you DID put that much work into it, why not keep it? If it's that awesome, you SO wouldn't want to sell it, and if you did, start the bidding at like 15 grand or something. Shoot, what's a new stang cost nowadays anyway? throw 450 horse into one of these guys and you're rocketing. now all he needs is NAWS from Fast and furious, THEN he'd break 15's, fo sho dawg!