As long as you have to mess with the top insert anyway, let me express my idea again to use a sheet of green plastic in the hole for a non-opening "Sky roof". I cited an actual model of 1954 Ford with a coral color body with a see-through green plastic hardtop. There would have to be some sort of a flange or lip around the inner edge and a long peice of tubing could be used as a gasket along with some chrome fittings from a motorboat plastic windshield to clamp it in place at probably 8 or 10 places around the edge. Just an idea I wanted to try but I did not have the time or money then. This will change your inside headliner a lot but probably you need a new one anyway?

Don Shillady
Retired Scientist/teen rodder