kinda wanna lift my 02 silverado with the 6.0 but than someone told me a leveling kit would be cheaper and would make the mpg drop as much. doe leveling kits come in different sizes? i would only want to go about 2 inches

 

Ready Lift Leveling Kits - 125+ Read Lift Leveling Kits Reviews - 4WD, SuperDuty, Duramax - Front & Rear

Found this website, looks like they come in one size for specific vehicle.
What size tires you looking to run?
i can run 285s on mine with no problem, 305s rub a little.

 

not really sure on tires yet, im really just planning out what im going to do for later on. everythings stock right now. i was thinking 275s. maybe 285

 

For 2", just crank your stock keys. If they're not wore out, you can get 2" out of em