I just picked up a 93 F350 4dr longbed 4wd with a 7.3 IDI with a bad yoke on the rear diff. I dont have tools to change the yoke but I have a rear from a 91 F250 IDI. My Google-Fu is weak and cant find information on what rears were in these trucks. Good swap or get a boneyard F350 rear? And any tips on identifying the diffs to get new gears, F350 has 4.56ish and F250 has 4.11ish? I'm thinking 3.80s-ish so can keep upon I85..lol.