ill definately try the 3.73 or the 4.11. i know the t4 wont last!! i had the pleasure of wrecking both my previous trannys as well!!heck, it isn't mine, so its not my problem, i just have the responsibility to make the thing as safe as i can for the kid.

304/th400/ford 9"s front/back 7"lift 15x10/35's
it will run someday