Gerard, is the coupe you are interested in currently in Seattle and if so how long has the previous owner had it on the road? I would look for obvious problems and talk with the PO about maintenance relating to conditions in your demographic area. I know that a 72 coupe was sold out of the Seattle area last year and the PO had performed many upgrades(?)to the interior door panels to keep out moisture as well as sound dampening. I think I still have his information if you would like to find out what he did on his coupe and how effective it was.