I was rust hunting the other day in a junkyard close by. I noticed that filler caps from a newer Pontiac and Chevy Minivan had a self rimming setup, so all you would have to do to put one in is to cut a hole in the fender and install it. It also had a cable hookup, so you could set it up like most new cars and not have to have a locking gas cap.
I also have pictures that I got from the 67-72 site that has it hidden behind a side marker light. If you all want to see it, have someone that can post pictures email me, and I'll forward it to them to post.
