with 3.73 gearing in it. I can get both front and rear ends out of this truck and that is drum to drum in the rear and rotor to rotor in the front. The donor truck is an '89 3/4 ton. From what I can tell, these should more or less bolt right up to my '85 jimmy. #1- Am I correct in thinking this? #2- Are 3.73's ok with 35" tires? (the truck has OD) #3- Do I need to purchase the front end complete, or can I just make do with the 10b I have now in the front and re-gear it to match the back?