i had a 98 firebird formula. It was really nice, and fast too. it had some problems, all of which have been mentioned by one or another above. It was the A4 automatic. All i really needed (which I never did to it) was put in a nice tq and a set of 410's. I'm sure I would have broke that 10bolt though. I've got a friend with a 6sp formula, and he has 342's in the rear. Almost near stock and he already broke the rear end. Ate up all the gears.

Nice cars though, I'm always keeping my eye out for another formula.