For specific differences between the convertible gasket and the rest of the models, perhaps Ulf @65dartcharger will chime in. He’s done lots of research. Glass is all the same though.
Yes, this is an area where there is two different windshield gasket.
A-body convertibles has a rubber gasket that is about 3/8 to 1/2 inch higher then on a sedan or hardtop. The reason is to cover the frame and meet the upper stainless steel mouldings. These gaslets are not being reproduced what I know of.
Wagons, hardtop and sedans all have the same gasket. These gaskets are being reproduced.
If you get a repopped gasket for a convertible you need to fill the area between the gasket and the mouldings otherwise you will see the windshield frame. I can get a picture of how it lools next week.
