O.K. here is the deal, while taking out the LSD rear the finned cover was loose. I did not use blue lock tight and it came loose, leaked that day while I was tunning, because there is nothing in the garage that shows leaking, and failed due to lack of fluid.
the input shaft bearing is toast, and the shaft itself is bent, probably because I tried to move the car when the shaft was smoking hot?
so I took the ring gear off the stock rear and put it on the LSD rear, then put the LSD center into the stock R200, boom LSD R200 again with 392 gears (I think thats what my stock one was??) and I think the 300z LSD was a 352?? anyway its all back together. it sucked putting it in on my drive way but thats what you do when your a turbo crazed Z guy.