Converting my Gen 1 Doubler from TH400 to 4L60E. Selling trans and 203 w/adapter. Transmission out of 79 3/4 ton, and includes stock Torque Converter and aluminum TC cover. Works really well. Clean fluid, shifts fine, but 2-3 shift a little soft, so I bought a shift kit to firm it up, but never installed (will include with transmission and a new filter). The 203 range box and adapter came from same truck. Works fine, no noises, no shifter. Th400- $250.00/OBO NP203- $200.00/OBO Both- $400.00 I will ship at your expense and arrangements. Denver International Airport is close to me. This the shortest TH400 available for a Doubler. Thanks.