Jay the CPA brought up an idea that may see reality sooner than later it's sparked my interest for sure. Let's see if we can get more realistic information for such a conversion.
I start with;
ZF 8 SPEED TRANSMISSION VERSIONS FOR 6.5TD CONVERSION CONSIDERATION
8HP45/845RE 500 ft. lb. torque...
VSSB PIN IN/OUT 1999 GMC, 6.5TD, K2500, 4WD AUTOTRAC, BURB
Vehicles equipped with AutoTrac NP246 t-case have 3 speed sensors (VSS) one is used for VSSB the other two (front/rear drive-shafts) these 2 speed sensors work in concert with ABS wheel sensors and integrate into AutoTrac controller...