Alright, I just got of the phone with Dan over at www.Diffsonline.com
and the 3.62 can be done. They can ship the parts or you can send the the diff, they do all the work, takes about 3 days, you get 3 year warranty, and they ship it back.
These prices include parts and labor except taking off and on the diff.
Going with a 3.62 gear swap would be $1895
Adding the 2 disc carrier with 40% static lock and stock ramps would bring it to $3495
Shipping is $95
Their # (781)983-2944