Qbert,
Do what I did;
Find a trans on Ebay (there are always a few),
have the seller ship it directly to Terry,
have Terry upgrade/rebuild and fit an LSD,
and have him send it to you.
Shipping from Terry, LSD, and complete rebuild with all parts was alittle less than $1100. Found my trans from $150 plus $75 shipping from LKQ Auto Parts off Ebay.