Once again thanks for the wealth of info. The Polycarbonate for the rear window is an excellent idea which I will pursue, is it available tinted? The heater option is one I am also working on. I have an old Arvin that I am restoring and have a part number for a 12 volt replacement motor but seem to have a bit of a problem finding one. As well I had heated seat panels installed on upholstery of the seat. Thanks, Roger