BAC5.2, Phil has been a big help to me with p/n's. He also knows trannys pretty well.
I'm sure he'll pick up on this thread soon.
I do have the receipt for all the tranny parts, just not with me right now.
I would still do a web search for a r160 rear diff and see what pop's up. That's how I found mine.
Judging by how much the tranny parts cost even with a 25% discount, I got hooked up with the parts guy at the dealer throught my Insurance agent it was still pretty expensive.
174,000+ miles, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. Also CHECK YOUR OIL, these cars use it.