Ummm....I'm pretty sure his has the "potential" to run 6.xx in the 1/4....Of course, it would take a bit of work....and some more parts....but your supra simply won't do it w/o 3x the amount of parts and money.

This guy was an obvious douche, but your actions were too far for such an obvious violation. You acted like you are about 17 or so. Grow up a bit, and don't try to repay the favor so much. The fact that he was a better driver than you pissed you off I think. It's ok though....You'll likely never see him again anyway. And an older mustang with HID's? Yeah, this is most likely a sheep in wolf's clothing...Or (in words you'll understand) a ricer in mustang clothing.

You need counseling. You anger too easily.