I have a 2000 F150 4x4 suber cab with the off road package. It has a leveling kit on the front and that's it. What backspace and or offset would I need on my new wheels for them to fit right. Will be running 20's (20x9 20x10 not sure yet) already have a set of Nitto Terra Grappler tires (305/55/20) and getting ready to order the wheels. Any help would be greatly appreciated (and maybe pics) Thanks again.