I just bought used A pillars from Hawks because the pillars in my 88 GTA were falling down because the part that holds the t-looking clips had all broken off. I was hoping my replacements would have better seals than the 26 year old ones in mine. They weren't. Anyone have an idea on where to get this seal or what to use to replace the seals? Any help is much appreciated.

 

Assuming you mean a pillar TRIM, the stick on weatherstrip tape works great.
The factory just lightly glued a strip of rubber to the edge, it isn't specially shaped or anything. It's only purpose is to keep stuff from getting in there with the windows open.

 

Thanks for the info.