We had a drive shaft made from the local driveline shop. I think he used a Jeep slip yoke set up . I have a 2005 RAM engine controller I bought from Modern Muscle and a PCS transmission controller. You will need to use the shifter from an LX, preferably an 07. you will also need the throttle assembly and this is available with the engine controller from Modern Muscle or I have an extra I will sell to someone if they need it. $175 and it is brand new. I think it is a $250 part with the ECM package.
I left everything stock except the cold air intake.
I don't think the engine will have much problem with changes but I cannot say for sure , you migh ask that question of Dave at Modern Muscle, he is great to work with. I do know it will handle Diablo Tuner type changes if that is all you are talking about. The TCM should work with changes . I am still learning the adjustment capabilities of that piece. It was the most difficult part of the puzzle.