Unless you put a donor roof on the car I would put a vinyl roof back on the Olds. I had to clean up a 69 Firebird 400's roof area in the past. It seems the factory did not do a great job in prepping the roofs on cars that got a vinyl top. First DA the roof with 80 grit pads and skim coat the pitted areas with filler. Sand and Block the filler areas and the rest of the roof and shoot it in a Dupont or PPG epoxy / sealer primer. It's up to you at that point to shoot a color coat on the roof but there is no need since you used the epoxy / sealer primer. Then install the new vinyl roof and chrome trim. It will be a lot less costly then grafting a new roof to your car. I guess it all depends on how far you intend to go with it and how much you like or dislike vinyl roofs. Good luck
