I just installed the rear window trim on my 66. I can't remember where I bought it though
It was easy to install, but doesn't fit the lower curved area very well. I'll probably take them back off and try to fix or get some originals.
The fronts that I bought at the same time were crap and I ended up tossing those. I have some originals that are ready to go back on the front.
It must be like russian roulette. I put a replacement set on my car and the fit was horrible especially in the bottom corners. Top corners did not have the correct radius either. Took them off and replaced with refurbished originals.
My car was missing one of the rear pieces when I bought it. I could not find the single missing piece so I bought a repro set by Corvex (sp?). It fit fine, but mine is a 67. Pretty sure I got the parts from NPD.