I have a 2003 F150 Supercab XLT 2wd and currently have 285 75 R 16's on my truck. I want to get Daystar spacers to level it out and have more clearance. How come on sites I look at they say they got a 2" spacer and it lifted there front end almost 3 inches? Some cases the lift is bigger than the spacer. How big of a spacer should i get to level out my truck and make more clearance? Should i get bump stops to go with it also? Would i be able to install this myself?