I have the motor already and I’m still trying to figure how to get this swap to work if I jsut get 03’cls trans,ecu, and harness will it just work or how do I connect it to the CG6 harness like everything else inside the car, but can I even use the 03’CL ecu if I plan to build the head on the j32a2 because the motor I got needs pistons and valves the timing belt snapped and I figured get pistons and jsut build the head but it’s never that easy