I've got them on my CJ7 NT, front and rear. Just remember to clean off the wheel studs good before you put them on, and to use the supplied LocTite and recommended torque when installing the spacers. Check torque again after the recommended mileage. I also check the torque on mine everytime I service the wheel bearings, which is once or twice a year.
1977 CJ7, AMC360 V8 w/ headers, DUI HEI, Edelbrock intake, Holley 4150 carb, , TF999, D300, D30 front and AMC20 rear with 4.56 gears and lockers both ends, 4" susp lift, 2.5" body lift, 35" BFGs, ARG steering, 8000-lb winch, etc.