In my 1973 TCS there was a flat black textured plastic trim surrounding the top half of the rear window that extended up to the roof, with a couple of slots cut in for ventilation. When I removed it, it pretty much exploded. I haven't seen much discussion of these, is there a source for them or will I need to make one? Additionally, is there a source for the front pillar trims, or will I need to build these as well? Thanks.