Is 68-70 B body roof structure all the same?

I've got a 68 Charger that needs some roof structure and quarter panel structure. I've also got a 70 coronet parts car with clean structure. I know the roof skins are different for the 68-70 charger compared to all the other 68-70 b bodies but I'm assuming the roof structure is the same for all 68-70 b bodies. Am I wrong? Ideally I'd use the roof and quarter panel structure (not the skins) from the 70 coronet to repair the 68 Charger. Thanks in advance.

I believe the Charger requires Charger parts, at least in the roof, and probably the quarter as well. The roof and how it attaches to the quarter is pretty radically different then the other B body cars, I can't believe anything under the sheet metal would be correctly located, but I suppose that would depend on how deep into the structure you need to replace. Gene