Truck Repair: Cummins M11 Switch, cummins m11, fan hub

Question
Hello, I have a 99' Freightliner FL-112 with a bad M11 motor.  I have found a good takeout motor from a 99 or 2000 International 8100.  Both motors have the same Family number XCEXH0661MA1, E.C.S FCM and Injector timing HZ.  All of the pulleys, accessories and wiring are different.  Can I switch all the different outside parts from the bad motor to the good one or is there possibly something different on the inside of the motors to prevent this from working?  Thanks Mike.  

Answer
Check the CPL numbers & ECM part number.The engines outside are the same so everything will bolt right up.I know the frt & rear eng mounts are different,fan hub,& some heater plumbing that has to be plugged.The CPL will answer the "different inside" parts.