v8Killer,
Honestly man, I think if you really really want to whoop some a$$, then just pony up for the 4.08 gears. It'll give you approx. 10% better acceleration in every gear. JNaut's run 12.2xx or something like that with full bolt ons and those gears (on street tires) so they def make a significant difference. If you're gonna go all out anyway, I'd just drop them in along with a good LSD.