As for gears, 3.73s are a good step up but for the 4V owners I know. They would swaer by 4.10s.
Gears swaps can always be performed by a dealership (shudder;() nut I'd locae a good speed shop nearby. May have to find locals here that can suggest a speed shop within reasonable driving distance.
STEEDA TriAx fan here, also.
I'd go with
91LX2Bfast's suggest on the TB and MAF. Improvements from a TB are marginal at bestt for the price. I'd recommend a swap with other modifications, ie. supercharger.
