We have a KJ club in So-Cal and a lot of the guys out here run this set up.....We use the PowerTrac no Slip locker in the rear and the Detroit True trax in the front. I have 55000 miles on my jeep in 18 months and do not have any problems. The true trac in the front does not cause anyproblems at all. I drive a lot of hwy milesa as you can tell but we also off road at least one or two trips a month. You can check out some our our members rides at our club website at
Lost KJ West club site . here are the part numbers of the lockers as well. Powertrax for open diff 92-0382-2905 if you have the factory Traclock 92-0382-2925 and the Detroit Truetrac is 912314 if you are running 373 or higher. if you install the Truetrac your self you just use new bearings in the carrier. i picked them up at NAPA. The bearing number is LM 501349 and the race is LM 501314. you will need 2 each of these. I have been very pleased with this setup. I wheel my KJ VERY HARD and have had no problems. When you go to our club website you will see some of the pictures and know how hard we are wheeling these little KJs. Later...Clint
One more thing...You did not say if you have command trac or select trac. I have the command trac. If you have the select trac be very very very careful if you are usiong full time with a front locker on the road no matter which one you use. I am really not a fan of full itme unless it is open. Hope al this helps. later