I have a tranny that i was told was an lsd, that I got in a deal. I dont know to tell. It cam with a dohc obd1 zc swap, but was no atached to it.

I was told that you can tell from the number stamped in the case by the fill plug. Any one have a idea?

Stamped by the plug it says: P20 B000. There is an X4 stamped on top of the tranny.