thanks gents. I went over a few threads on the washer issue and found the guys website where he sales stronger bolts and washers. havent gotten to the install part yet
Here's where to get the OBX LSD. I snagged mine used for quite a price . build on a budget
https://www.ebay.com/itm/OBX-Racing-Sports-Limited-Slip-Differential-LSD-for-89-94-Nissan-240SX-300ZX-NEW-/190858753030