What are your times now? I wouldn't get the posi and axles unless it is already starting to go. With an automatic and no high stall converter I don't think you will have to worry about hurting the rear end. The 4.10's should take at least 2 tenths off maybe more.
when you get 4.10s spend the extra money for LCAs, and subframe connectors with some ET streets. launch that like no other. Im sure you would see low low 14s possibly high 13s, i have a 97 GT 5 speed. at the track i hit a 9.665 with MAC offroad H pipe, and flowmasters. that was with stock goodyears with a 2.25 60' time. now i got the mods in my signature and I plan on busting a low low 14 with the addition of 4.10 gears.
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