[6BT 56]

I had this driveline in the original truck on the road for 3 years as a second work truck / winter better to keep my 05 3500 decent. I can't complain . I would move tons of small boats around . Sometimes up to abt 26 feet and 9k . Wouldn't win any races but worked well. You need to keep in mind the reason these old truck are around is cuz they never made enuf power to tear them Selvs up. The diffs are a no brainer there great. I have a fuel pin and governor spring for mine but there in the glove box. Don't seem to do much there . Lol. I want to get mine to steer nice then I will add some power. I think you will be plenty happy. I over filled my get rag by a litre pr the trans shop. They say they like that. Mine will jump out of 4th once in a while if you roll off the gas just rite. Trans guy says that's from thousands of miles with your arm hanging on the shifter. All in all great drive line. I have 1 more in the row behind the barn saved up for something . Maby my k20.