1979 Jeep CJ5 with 304 V8, T18 Transmission, Dana 20 Transfer case with TeraLow 3:1 gears, 4.88 axle gears, Detroit Locker up front and Ox Locker in back with 1 piece axle shafts, 36" SuperSwamper SX Tires, Shackle reversal, MileMarker Hydraulic winch, MSD 6A ignition.
I went to their website and they have a drop down list that you select your engine and Transmission . The choices are chevy gen 1,2,3 so you would need that info and then they do not have a drop down choice for the 3500 but they do the 3550 which is practically the same tranny except it doesnt have an integrated bellhousing.