Finally took my project truck out for the 1st test drive last weekend. I installed a 4bt cummins with spicer 3053A transmission, married to a chevy NP-205 transfer case. It has 4:89 gears and a custom .69 overdrive in the transmission. Pic attached is old, but references the tranny swap/married transfer case which I consider the signatire of this build. Its a great combination and runs really well.