Coil spring cars react different. Car may be a little heavier, but may hook better. Air bags!! We ran 50/50 cure rides in the back and 90/10's in the front of Joe Possella's 1970 LS-6, with a 4:88 went 11:47et. 9" slicks and headers. 4 speed. This was a bench seat and stripes delete car. Dark blue. Wish I knew where that went!! Like Archie Bunker says...Those were the daysss!