Gas cap orientation

I didn't think of that, but it sounds reasonble. I meant the gasket on the gas cap might need to be thicker to keep it away from the body farther, but that might screw with the clocking
Got ya


My assumption is the metal of the cap is the outward limiter.

On a side note ...

Mid to late 60s Ford pickup OEM style gas cap rubber ring is the perfect size to replace a 67 to 70 gas cap seal

Buy the Ford and drill out the center weld till the parts seperated.

Take the rubber ring seal and carefully slip it over the center of the Chrysler and wiggle it into place