I bought one of the spacer kits that fit on the bottom shock mount and added a bracket to extend the ride sensor so it was in the factory ride position. It raised the front end perfectly. I'm running the 275/60R20 Goodyear Ultraterrain which are 33" diameter. I just replaced my OEM Magneride struts/shocks with units from Arnott SK3354 and AS3066. They maintain the air leveling and have a built in resistor that fools the ride control. They were $1300 at Rockauto. The shock is an Eibach unit and the ride is incredible. I wish I knew about these when the truck was new, I would have replaced them then.