After hours of research on this site, I have decided to go with a Donahoe Racing 7" lift, and 325/70/R17 Nitto Terra Grapplers(37"). What I need to know however, is what backspacing should I be looking at for the new rims? Would 3 5/8" backspacing work for curing any rubbing issues? Also any links to wheels that are similar in style to the 20" F-250 rims would be great.