Simple solutioon. Call the manufacturer, tell them your vehicle and the amount of suspension lift you have on it, and they will give you the partnumbers for the proper shock for your application.

Then call the distributor of your choice and order them by stock number.

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.