So i have been working on power windows on a 1968 Camaro and a 1968 Firebird. Both are convertibles. I have to say i would never want to own a power window car. I have wasted many hours on these windows trying to make them close and line up perfectly with the window seals. I have been doing this stuff for 38+ years and this is a complete nightmare. Even when i get them close to perfect as i can get them after a few up and down cycles they are off again. The problems with these cars is over the past 57 years who knows the history of these cars and there have been way to many people that have had their hands on them. You know when you go to work on a car and find metric hardware, its going to be a problem. Then there is the added fact that lots of sheet metal has been replaced. Floors, quarter panels, fenders