I came across this LSD on eBay,
http://m.ebay.com/itm/161648753885
It's an OBX helical LSD. I've read many reviews on OBX LSD's and some say it's total garbage, while others say they've been using them for 2-3 years on cars that make 400-600hp. The other thing I've heard is replacing the hardware with fastenal hardware. Since these things are only $400, I'd be stoked if I was getting my money's worth. Thanks guys!