The leveling kit and 275/70's would look good on there...if you search here or google, there are quite a few trucks with that setup. I agree with Chphilo...the 3/1 with 295's would look really good, but depends how badly you need the mpg. I have an 08 with the 4.7L as well, and I'm worried the 295's will put me at the gas station too often. I'm looking at leveling mine off with a 2-2.5" though when these tires wear out, and I'll probably be going with the 275/70's as well.