i have a 8.5 front and 7.5 rear with a 3 inch body lift... theres really nothing else you have to do but throw on the body lift. usually the kit will come with an extension for your steering and your gas tank. oh ya. but what doesnt come with the kit is a link extension for your shifter. thats something you might want to invest in if you plan to keep your 4 wheel drive. with out it your 4 wheel drive will pop out when you shift into 2nd gear. its just not long enough