I have a 251 cu in Mopar flathead 6 with a truck bell housing and 4 speed trans with the low granny gear ( NP420 ) I would like to swap it out for a stick shift 3 speed + overdrive. The T170 RTS is popular with the Model A and flathead v8 guys and is used as a conversion in Jeeps. Has any one fitted one of these up to a Mopar 6 ?