I got an 88 Linc LSC, I took the air ride off and replaced it with an aftermarket spring conversion kit. It's ok but not what I expected. The ride is nice and smooth til I decide to mash my 5.0HO. It buttoms out, body role, etc. Does anyone know what coil springs that I can put in there to stop this. Mustang coil springs are shorter and for a light car. I need all the help I can get on this one