Hey all- I put a '73 Nova sub under a '54 Chevy Panel, a '79 Camaro sub under a '49 Chevy pick up, a '80 Camaro sub under a '40 Pontiac 2dr sedan , all with PS and Power disc brakes. And a MII IFS under a '51 Chevy Bel Aire. I like the ride of the subframe better than the MII IFS.