gas filler behind taillight ?

^^those come stock on all the box style caprices back in the day...go snatch one from a junk yard and refinish everything...easy find i would think

I used my stock Gas door Hinge Modified the Taillight so that it would bolt to it then made the hinge/spring work the only problems I had was 80-85Mph opended it at first (added a magnet catch available @ lowes or hardware store) then the fact that a S-10 taillight is just a real tight fit for gas fillen I had to lose the side marker in the light and when rearended it plays hell on the whole setup

i got mine behind the light. wasnt too hard but just make sure u have no leaks

seen the green car at lebanon, it's pretty bada**, but I think it's on a trac not a hinge.