Yeah, upgrade to a 8.8...and then gears you want in that. Don't bother wasting money on messing with gears in the stock 7.5.
Mike - 2005 Stroked/Forged/Cammed V8 (5.0L.); Kenne Bell 2.6 @ 18psi, + many mods. (formerly a V6 w/Vortech supercharger);
- 2006 4.0 V6 with PH Turbo and TR6060