Back in the 60's, when vinyl roofs were IN, there was also a paintable "spray on vinyl" top; it was similar in texture to the raptor liner, but was also a 'flattened' shade, so it did appear as vinyl. Spray on Vinyl might still be available somewhere although I don't recall seeing it for a long while. Using raptor liner to simulate the look was discussed on HAMB in the past complete with this photo with it on a '55...