I have a craftsman 3 ton. I've had it for about 5 years and it's a great jack. I had a harbor freight jack and it lasted about 9 months. Just say my experience with both jacks.
Mine will run on the same resemblance of diesel 😉. Fuel mileage isn't bad if I keep my foot out of it! It's had some work done to it and the 3:42s help a lot!
I had a 5.9 in my 06 3500 and the 17 and the 22 have the 6.7. Hands down the 6.7 was better in stock form. I had a Smarty Jr. for the 5.9 and the 17 was deleted and tuned. cummins and Ram have the 22 locked up tight and the tuner biz is having a time breaking codes....
Ram 3500 you can get one of two different transmissions now. It's the 68RFE ram transmission or the Japanese Aisin transmission. I've owned trucks with both.