Well I would go with the 3:73's right now and in five years or so when you unleash all that turbo power think about swapping to the 3:55's or keeping the 3:73's, at that point you will need aftermarket stronger 31 splined axles and a new carrier to harness all that power. There arer a lot of blower cars running 3:55's and run 10's.
------------------
My Ride Check Out My Site 91GT, Holley SysteMAX II Kit-Heads 2.02" x 1.60",Full MAC exhaust 1-5/8" Long tubes, 2-1/2" O.R H-Pipe, 2 1/2" cat back, 12" K&N Filter, RNH PERFORMANCE Ram Air, Ron Davis Radiator, Full Suspension,3:73's, Welds, Best on new motor-12.60 @ 108, no traction 1.98