I recently picked up a '01 Dodge 2500 4x4 with the stock 360 5.9L Gas Engine. The motor is bad but the truck is in extremely good shape. I bought the truck cheap and would like to put some money into it. What I was wondering is, how hard would it be for me to put a 5.9L Cummins in the gas engines place and where would I go to look for something like that? Do I modify the frame? What about the radiator, motor mounts, transmission and other things? Any help will be appreciated. You can email me at email@example.com thanks!