I just talked to Biff on the phone today to thank him for the windows he built for my car. The ones he has on Ebay have a VERY SLIGHT imperfection in them and are priced very cheap, great deal. If you don't mind spending the new window price, check into the custom windows he built for my car. Same as the others, but with no buttons (rivets). They are a super clean looking window, totally smooth on the outside. Call him up, he was telling me that he was going to test the waters to see if there was an interest and would probably let them go for the same price as the others. I'll try to attach a picture.