gears and shift-kit

The consensus is 5 speed 3.73 and auto 4.10's naturally the auto needs more help. If $$$ is not an issue you may want to think about rebuilding the tranny while you're there. It would suck to go in and install the shift kit then have the tranny take a crap not long afterwards. Once you feel the difference in how the car runs with gears you're going to play rough with her .

www.tccoa.com go to tech then tranny. there is trans parts upgrade list on there and a free shift kit. You can get everything for about $40 from ford