When I bought my springs I called Rancho and talked to one of there techs, told him what I had, what size motor and winch on the front and that I wanted 2.5 inchs lift and he gave me the part nos to order. Rancho springs on a CJ ride really stiff, a lot of the guys here like Rubicon Express. Prob any good spring company has a 1-800 number and they could give you some good info.

84 CJ7 304 HEI 35 BFG,s rear dana 60 with detroit locker,Viar compressor, fibreglass body, 2 1/2 spring lift, TF999auto, Warn 8000 winch, Plus a cool little trailer on 35,s. JEEP stands for just empty every pocket