[73CJ]

You're right, the gas fill was originally under the backup light right side. Check to see if the fill pipe is on the left or right. They may have wrapped the body side panels with sheet steel and didn't get around to sawing the hole. Look inside the rear fender well.

You might be better off trying to find a rust out cheap rather than buy separate parts. PM me and tell me what you want. I've parted out 2.

73's are cool. D44 rear is tough as nails. Frames can be boxed. They like to break at the spring mounts.