I got a cable tranny with lsd when I bought my B16 swap. I think it is a YS1 but it could be a Y1. The stupid tranny builder painted the case and painted over the sticker. Whta gears will work if its a YS1 and what gears will work if its a Y1. Rememberthat I have my LSD.

 

ys1 tranny u could basicly use hydraulic gears (si or gsr gears) and would work fine, but you will have to shave some metal off the tranny to make it work. As for y1 tranny it came off EF chasis and were made between 88-91. You would have to use jdm gears, between those years (88-91) since the splines are different.