Whats a good off road tranny / transfer case?

have a 96 bronco xlt with the mitisibishi 5-speed tranny and borg-warner 13-56 transfer case. just want to know if this is a reliable set up off road or is there a better option that will bolt up to the ford 302. can this tranny/transfer case be “beefed up” at all? Heavy duty is key, because im rebuilding dana 60s to put under it. thanks and any kind of info is greatly appreciated. this is my first home rebuild.

There is a much better forum for this information: http://therangerstation.com/forums/

Enjoy!