I mentioned an adapter for a T-case in the event that an integrated 'case was to be used instead of the factory style divorced. A T5, Richmond, or Tremec would be way too light for off road use, gearing isn't low enough. The NV4500, NV560, or ZF S6-650 would be a much better choice. Other considerations would be to check into Clark or Fuller 5/6 speeds used in 1 1/2 and 2 tons. I have seen those (with and without and overdrive) in the standard GM bellhousing pattern in addition to the SEA #2 pattern.
