I've heard about conversion u-joints but I've never seen them. I took a Shaft off a fullsize bronco and cut the yolk off and welded it onto my shaft. Everyone says to have it balanced but I never did, doesn't vibrate too bad. You might be able to find one that is the right length. Your shaft will pull apart at the slip yolk, look around for one that has the right length back section. A bronco/f-150 shaft will slip into it. I never bothered looking for the right one, I had my bronco shaft sitting in the garage already.