6.5" lift long arm set up. run 33s now and still be good to run 35s later. pretty much only difference in parts is a bigger spring. soa is common for rear lift and this is good time to swapout axles. but its more then just lift for them bigger tires, axles and gears are the unseen parts that makes all the differences. whichever idea is a complete list of parts and have on hand before swapping. do research based off your end goal with rig, build for 2 sizes bigger then the tire you want now. unless dead set on tire now.