LAtrailblazer

Does anyone know if there is a source for roof panels? I need to replace the windshield and the shop says the rust needs to be repaired either:
1 - fixing the rust spots with an eurothane based epoxy ( The sealant won't bind to bond)
2 - replacing the roof panel.

I'm looking at restoring my dad's F150 bit by bit...

Any help appreciated

John
New Orleans, LA