o'kay, I already have to replace inner seals on diff, so wondering about how difficult to put in detroit upfront. DO I have to take out pinion shaft? and essentially redo my gears (pain in the As!) or is it easy as 14FF, just take out carrier, remove ring gear, bolt on to detroit, put back in carrier, and so on). Next is the inner seals, I fried em trying to weld on the diff housing (for hydro mount)? I don't have any outer seals, are there any? Kind of new on whole D60 maint. Next is shafts. My D60 was from a CUCV and is 4.56. What kind of axle upgrades can be made. From reading posts, it would seam as if they came with 35 spline inners and 30 outers, what do I need to upgrade to 35 spline inner and outer. Thanks for any help.