I have a couple of things laying around on the work bench off a '66 Coupe if anyone is interested PM me.

I have a gas cap and filler neck. As far as I know they were original to the car. Used but in good shape.

I have the reverse lights that as far as I am aware are original. They have some minor pitting but seem to be in decent shape for 42 years old. They need to be cleaned up a bit...especially on the back side.

Also have the tail light wire harness that I pulled out last weekend to install a new one. The lights worked when it was on the car but I am slowly rewiring the entire car. Might be useful for someone if connectors or whatever are needed.