gas cap wanted

[pyro]

I need a gas cap, or a part number for my 63 MM Duplex.

[LMS]

It should be a standard 63 caddy gas cap, any auto parts store should have them.

[pyro]

I wish it was. I have a standard 63 series 62, and part out 63 and 64 Cadillacs as a side hobby. Among the small collection of gas caps, nothing will fit the 63 MM. The standard Cads have an internal locking feature, but the MM has an external locking feature.