My 2002 2500 diesel was hit by a drunk and the front end got crust and the transcooler (factory) is to be replaced. Should I replace with larger aftermarket or just add an addtional one. To get home frotn most camping trips I climb a 14% grade for about 3.5 miles. I see transmissions occasionally over heat on this road. Please make suggestions. Thank you.

 

I would add another one, more is always better!!