This may sound a little too conservative for this thread lol, but why not just upgrade to the 9.75. Bolts right in and its pretty strong as well. U can upgrade with new axles better bearings etc.
Heres an article comparing the sterling 9.75 to the D60.
http://www.fourwheeler.com/techartic...ild/index.html
I know its not "Custom," but unless you are planning for an SAS down the road with 40s or bigger, its not really necessary IMHO.