Joined looking for some good info on modifications. Retired Navy, Own 2010 Silverado 1500 LT, Crew Cab 4X4. Just ordered 20 inch chrome rims with 275/60/20 Goodyear tires to replace the stock 17's. Going to also do a 2" leveling kit. Dealer states there is no OEM indash Nav radio for this truck, will have to go aftermarket. Ordered front fog lights and looking for good chrome Bull bar next. Just installed the K&N CAI and truck seems to have lost 0.8 MPG? Tried loading a Pic but that locked up my computer, will try again later.