My advice - don't buy your tranny back. do a hydraulic conversion like I was telling you and get a type r transmission. Either a jdm or usdm will be fine. You'll get a stronger and younger transmission, and they come with an LSD. You can get them for decent prices as well. You said, you basically are getting your buddy's ls transmission in echange for your busted one? Cool deal. Sell that ls, and you'll have more money to put toward the itr trans. My .02