I've been having a difficult time finding a drive shaft, but I found a place to get one made. Since I have to get one fabricated, I decided to go ahead and get a modern rear end and do that replacement that I had planned for the future anyway. So I ran over today to the local salvage yard and got one from a 94 Cherokee.
I also got the master cylinder and proportioning valve from the donor Jeep as well. Since I'll have modern brakes on the rear and master cylinder, I went ahead and ordered a Scarebird disc brake kit for the front. Hopefully this will get my drive line and brake systems squared away.