You're talking about the r200 from the zx? I'm trying to avoid having to swap all the stuff required. It's 73 240z I'm trying to retain as much originality as possible. I have found one open 3.9 r180 out of Cali which is $500 and no clue on shipping. I was just wanting to find something I could, worst case scenario, take the gears from and swap into my diff I have now. The ring and pinion gear sets are NLA from Nissan or aftermarket.