I have a 76 scoutII with D44 front and rear. I took a nice 100 mile road trip to the desert a few weekends ago, and then a new noise surfaced on the way back from that trip. I think it is the rear diff. Let me explain how it happens and we'll see what the Binder experts suggest. The issue started with a broken tranny stud, which i since replaced with all grade 8 hardware, and repainted the crossmember and a new poly mount, well I thought the noise was from the tranny being all loose and missing a bolt, I was wrong. still does it. if i go full crank left or right,a nd get on gas even 1/4 throttle, the noise starts. it is a CLUNK CLUNK CLUNK and increases if i go faster, and if I cahnge gears, it does it the same, does go from slow to fast. it is definitely related to how fast the tire is rotating, not how fast the driveshaft is rotating. Then, as a test, I tried to go to a local dirt field, and got full crank, left and then right, and it does it consistently, and as i look at the driver side rear wheel, as it is clunking, the wheel sorta 'jerks' in perfect correspondence with the sound of the clunking noise. so the clunk clunks, and then the tire sorta jerks, almost like I had a locker or something, which I dont have. I think i have the stock powertrac or power lok limited slip, the one with no clutches. anyone have any ideas/suggestions on how to fix this?? I think the best bet is save up 7-800$ and get a detroit locker. on that note, is that something I could do, or does the R&P have to be reshimmed and redone since the detroit is a new carrier? I imagine i cant just pull the old one and bolt the detroit to my ring gear, and have it line up. I know a detroit is about 500$, so how much should I expect to pay to have a shop install it. sorry for the lenghty post guys, I hope you can understand my symptom from my description, because it is really hard to describe. thanks for any responses!!