Your good up to 2003 with no modifications. After that you can use any 3.7 up to 2012( liberty, nitro, Durango, Ram, Dakota) . Up to 05 all you would have to do is change out reluctor rings on the crank and cam. This requires disassemble of the bottom end on both engines. After 05. Same as above but you will need your intake and sensors plus an EGR block off plate.
Sent from my XT1585 using Tapatalk