has anybody done this? i located a 1998 dually rear end[think i need a 01/02]. i would like to put a 8wx9l flatbed due to my box is so beat up. anybody know where or who sells whole used or rebuilt rearends?dana 80 i,m guessing. thats what i have behind my 5spd. thanks. who sells that 6sp conversion kit these days. saw a add in the tdr magizine but i gave the mag to a friend. thanks