What's missing.

You need the locking strip. It holds the lower part of the gasket as to prevent leakage. The hardtop lower stainless does fit you just need to cut I think an inch but do your own measuring. I would leave the strip in place and lay a bead right on top of it. The chevy truck filler I used on my 68 Dart Conv. lays nice for doing this. I will take a pic when I get home if I remember. lol