Got a 68 Road runner with some serious upper rear window rot. I don't think it would be too difficult to make a new channel for the roof skin but there's a section of the rear crossmember 4-6 inches wide that's nearly gone and would be tough to duplicate. I see AMD has the rear bow for the Charger. They obviously don't interchange but would the middle flatter part be close enough of a match that it could be sectioned in? I called AMD and they said no reg B-body rear bows were being planned.