I do sometimes prefer doing things the hard way, I would buy a used lighting except I love the truck I have and want to use it with the SC 5.4. The time and work it involves are no object, the time I have and the work I love. About the tires, its already got 17x7 factory wheels with goodyear eagle gt II's (p275/60R17) on it, so I dont see those as being a problem. The tranny and back is being completely replaced with a Richmond 6 speed, centerforce dual friction clutch, carbon driveshaft, and a set of 3.73 posi gears