I have early 04 dodge 3500 4x4 4 door with the third automatic transmission.I have had a valve body and after market torque converter put in this time and its been in for about a year and it is going out again.I don't race it but I do drive it kinda hard and I pull heavy trailers on a regular basis.I know there are very good aftermarket autos out there but I would rather swap in a 6 speed.I just got this truck payed off and don't want to trade it for a new manual trans truck and would like to know if anybody has done this and what it would take.Any input would be appreciated.