4.56 gears and nv4500 with 3 to 1 low would bring the crawl ratio back to stock.
price? $1300 new gears, new case. you reuse your shift rails and such
1000 less than an atlas. and stronger. AA does NOT recommend and atlas for our use.

just fyi. dont know on a divorced version yet.
http://jbconversions.com/pages/produ...205/index.html