do the new repro floor pans have body mounts on them. becouse the ones on my car are rusted out. if not where do I get them. also on the GM full quearter panels do they go to the roof line, and do they meat up with the back window where the window sits. this is for my 66 SS

Floor pans would have body mounts only if it said so in the catalog. Normaly they don't. Any good place where you could get floor pans should also have the mounts. Any full quarter panels will include the sail panel which goes up the side of the roof & gets into the rear window & trunk.
Some catalogs would be Year One, Paddock, Classic Muscle & numerous others. Just do a search on the internet & you'll have endless possibilities.