A good friend and I were discussing restoring a bigger tractor today! We want this tractor sto be as close to new as posible! Now since this tractor will go back to the field to do alot of heavy work again! We figured complete rebuild of the engine and everything in front of the clutch which it would get a new clutch and everthing to go with that all the oil leaks fixed and whatever else it needed! So then we got to the tranny and rearend which is what my question is if the tranny and rearend seemed fine would you leave it alone or disassemble it and check it out since this is a complete rebuild! My opinion was to tear the rearend apart and replace all the bearings my friend says no the bearings that are in it if they aernt out they are better than any new ones today! Maybe hes right! What do you guys think?