Well I know there are plenty of places to find a motor. Check out the vendors list on SE-R.net. Off the top of my head, you can call K. Watanabe, Soken, Soko? For a really comprehensive list, check the se-r mailing list archives. For the other parts, look at the classifieds here or on se-r.net or b15sentra.net or junkyards, or Courtesy Nissan in TX or Infiniti os Scotsdale or
www.copartfinder.com These are just off the top of my head. I know there were some ecu's for sale on the se-r.net classifieds.
Check out the sentra mailing list archives for some heavy duty axles that were mentioned a while back. Someone on that list is selling them or works for a shop that sells them or somthing.
Check out the Sentra online Magazine (www.sentra.net/solm) on sentra.net for a pretty thorough write up of the swap in a b13.
There is a lot of information out there. Please check out se-r.net and sentra.net and then come back here with any other questions. It really is not hard at all to find the information once you know some sources. I had a shop do the swap into my 93 Sentra XE and they got all the parts for me, most of them from Courtesy Nissan or a junkyard.
By the way, it's fairly expensive, even if you do it yourself. Hope this helps.
Oh, also, I see posts like this all the time on b15sentra.net, but 1 in 1000 of those posts are serious, so i have become tired of answering the same questions over and over there. That's why I haven't answered your post over there. I feel like people who have found this forum are probably a bit more serious, so I'm more willing to help.
[This message has been edited by tommy (edited 02-28-2001).]