I used a setup from Classic Auto Air and also got very good customer service from them. I called several times while installing in my ‘66 Dart GT. I’ve had less-than-helpful responses from Vintage Air while installing in a Chevy years ago. When shopping for my Dart unit, VApeople didn’t want to help me. I asked for some dimensions of one unit and I eas told to buy it and find out the dimensions. Perhaps they are better now, but I really like Classic Auto Air unit and customer service.