Vintage Air has their own design, but it is much less user servicable.
It appears to me that Classic Auto Air copies Old Air Products, then makes a couple small changes to avoid being sued. They come out with new product lines about 6 months after OAP does.
That said, one of my friends put a CAA system in his squarebody and was super happy with it. So your mileage may vary.
Last edited by Peggy M; 07/26/2024 11:20 PM.