Fish,
Changing the entire lock mechanism is pretty easy. All you have to do is remove the steering wheel and turn signal assembly, insert a small flat blade screwdriver down into the slot near the 2:00 position (look for the hole) and press down on the part on the side of the lock tumbler barrel that keeps the lock in the column. You can feel the barrel come loose when you pull slightly on it. This works with or without out the key. I just did mine last fall and it took me about 15 minutes. My grandson lost his key in his 86 and we did the same thing in about 30 minutes (he wanted to help). I then went to Jeep and bought another lock for about $30 and put the new one in. It just slides back in and locks into place. I hope this helps.
Dave