Door Seal?

They don't make them yet for the 63-66 yet. But I redid mine with this stuff called plastic dip, you can get it at Home depot. They have a Dip and a Spray, I used the spray and they come out looking like brand new. They take the shape, will fill minor holes (may require more spraying or dipping)

Best of all it is the same shape, no breaking in the seal to conform.