never mind i just went with JD 70/30.they where calling for a 8110 because of my static measurement,they are 15-24.but sense i plan on doing more lift,shackles or add a leaf, i decided to go with the 8115,witch is 16-26.i figured i would give up an inch on compressed and gain 2" of extended.looks like i will be putting the 2" extended bump stops in just to be safe.i don't think i will ever compress both tires at the same time and he said they had bump stops built in, but i would rather be safe.ill post how i like them but probably wont be able to tell much till i do the dual set up up front.at least my rears wont be bottoming out for no reason on the street!!