I just received a new Paragon catalog in the mail and just flipping through it noticed they now offer '63 rear moldings (pg. 98). $2600 for all the pieces except the large 90 degree piece. Last I checked, they had a few of those NOS for about $350 each. I think the long straights were the hardest to find, so hopefully this will complete some sets.
Split window moldings
Easier to make split windows cars from 64-67 donors now.
Split window moldings