Has anyone installed a gas cap from a '71- '73 Mach 1 on a '65/'66? I installed one on my '65 and it doesn't fit flush to the tail light panel and it's real close to the trunk lid. If you slam the trunk lid down then it hits the gas cap, it doesn't if you close it easily but it's to close for comfort. I know I've seen them on '65/'66 before, but haven't looked close enough to see how they fit. Thanks......