Available for Dana 30/44 and GM 10 bolt, Part #: OX297X and lists for about $150.
The Dana 60 application is Part #: OX332X and lists for about $230.
I'm going to see them this week and see if they have anything for the truck. There about 10 miles from my house.
Ox USA
11625 Prosperous Drive
Odessa, FL 33556
Tel: 813-486-9506
Fax: 727-569-3200