i want a dana 60 in the rear of my 90' (just like the locker avail. options over the 14) every salvage yard ive gone to has about 100 of them lying around, anywhere from a 69 f-250 to a 2001 ford panel van. i know im going to have to move perches and shock mounts. are the ford van ones 3in wider like the 14 bolts under vans? is there a possibility of finding one with 4:56's ? does anyone know the best donor vehichle? thx--j.c.