I have a 2017 Expy and like many others was told it had the HD towing package which it does not. I added the trans cooler and factory brake control but since I tow in the mountains have had several instances where the temp still gets too hot. Ford will only tell me that I have the standard cooling radiator CL3Z-8005 A. Has anyone swap the standard out for the HD CL3Z-8005-B? And was id a direct swap or were other parts needed?