Does anyone know if there is a difference between the front coil springs of a 1500 2wd ST 4.7L Crew Cab and a 1500 2wd SLT 4.7L Crew Cab. I want to put a leveling kit on but there seems to be a difference in what size spacers I need. Some threads are saying all I need is a 1 1/2 inch spacer while there are other people who are saying that 1 1/2 inch spacers didnt do anything and that I would need a 2 1/2 inch. Any help would be appreciated.