Ok so ive got a 91f250 with a non tubro 7.3 its 2wd and has a manual trans. i would like to make it 4wd. (the truck has 60K miles and looks good) so what manual trans will work or could i use a divorced tcase? (i havent be able to find a 4x4 diesel with a manual trans. at least in my area.) If i can use a divorced tcase what tcase will work. thanks for your info.