Pilot bushing for 4 speed swap

You have options, and none of those options require you to disassemble anything! First, simply check the rear register of the crank for the pilot bushing, you may get lucky and there will be one already installed! If there is not one, you can have the outside diameter of a new bushing turned down to the pilot hole size by any competent machine shop, and just tap it into the unreamed hole, which is what I've done more than a few times with no problems! You can also buy the pilot bearing that fits into the crank register where the snout of your automatics torque converter about would usually ride!! Then just assemble as usual and you will be all set! You're gonna need the pedals too, as I'm sure you know, and I hope you grabbed the frame mounting bracket for the Z bar!