That's pretty common for the late bugs with the crescent vents behind the rear side windows. A lot of folks fix the rust and then fill the crescent vent with sheet metal. I know there is a VW junk yard up in greenback, tn off of Henry road or drive. It's just on this side of Maryville off of 411. I think it's called foothills imports. I can try to find you some info but I don't know if they allow cutting. Maybe someone here locally has one they are about to scrap.
