I have Tonys front springs and a 2" drop in the rear. I think Tonys springs lowered the truck 1 1/2 " and are stiffer. But I am on the bump stops. You said you still have the factory slapper bar? Get rid of that bar and get a set of Caltracs. I also have QA1's set at 8. My truck will jump around on rutted roads. But it does corner good.