that's an old jdm lsd R160...viscous...if you snap the cv's you are going to either have to make your own or some from japan...or an importer.

I had the same one in my first rwd setup with 4.44:1 and until you were moving it was pretty open...coming off a dusty corner from a stop it would peg-leg

but when you snatched second that ass would hang out