window parts

Hello. I was wondering if anyone here knows where to get the rubber window molding for the rear quarter glass on an 87 b2. I'm rebuilding my truck and dont like painting around it. I searched this site and found no questions on it and LMC didn't list it. Is it even available anymore anywhere?

I have looked but really can't find much. My motors have went out and i just don't want power crap any more. What will i need for this swap. I am just getting everything that i need at the junkyard. I really what someone who has done this swap to tell me all the parts that i need to grab...