In desparate need of early model 71 dart fuel cap

This is a real tough cap to find. It's not made (by anyone) any more. It fits only '70 California plus early-production '71 50-state/Canada A-bodies. There is no other interchange. No other cap fits. It doesn't help that one of the repro parts vendors is a thoughtless, lazy nitwit who sent a '68 Dart to China for the quality-oriented people of that fine nation to copy a bunch of parts, then assumed that just because the basic A-body shell is the same from '67-'76, the gas caps are all the same. Wrong, that's three different caps that don't interchange, but now there's a flood of "67-76" A-body caps all over the repro parts market. :roll:

You may well find it easier to swap in a fuel filler pipe from a '72-'76 car, thereby allowing the use of the easily-found cap for that application.