Re: putting new 7.3 in my truck and have??
I have to disagree that the rear main seal hardly ever leaked that's is a spot known to leak on 7.3s. Change the rear main seal, the front seal, and do your oil pain and oil cooler deal. Another thing I would strongly consider is doing head studs while it's out because it's super easy to do. Just find the torque pattern online somewhere and simply unscrew one bolt at a time and then put the head stud in, just go one by one and it shouldn't take you any longer than a hour. I agree not to change the head gasket because that things had 150k miles of heat and crud sealing it up right now.
2003 F250 7.3 Lariat, 4 inch lift on 35 BFG AT's, 5 inch turbo back exhaust, afe cold air intake, TS chip, projector headlights, custom sub box, interior led's, underglow, 2% tint all 4 windows and rear, 30% window tint, color match bumpers and grille.