Original Balland trunnion u -joint

That was my first thought....why pull it apart? There aren't any repair parts out there for it anyway unless you're lucky and find some NOS stuff stashed away somewhere. As for the shift/park cables....If you've never removed one before, start with the park cable. First, grab a drain pan and put it under the tail housing. Loosen the clamp holding the cable housing. It's a 7/16 nut on a stud. Back off the nut until it's flush with the end of the stud. Tap the end of the nut so the stud moves and releases the cable housing. Remove the Allen head plug in the small cover. ATF will start draining out so don't be alarmed. The trick to releasing the cable end is to trigger a hairpin like clip that fits in a slot in the cable end. A small screwdriver can be used to press it aside. If you can't figure it out, just pull the cover off with the cable still attached so you can see how it's fastened. Carefull you don't bend any of the parts inside as you pull the cover off. Once you see how the cable end is fastened, you should be able to do the shift cable. On it, just pull the bolt holding the adjustement wheel and pull the cable out as far as it will easily go. Then the fishing around with the small screwdriver begins. Sometimes it will release on the first try, sometimes it takes 15 minutes to get the right angle. Have fun!