Standard RMK additional cooler is in the bulkhead, and IIRC you would have to pretty much tear everything down to the bulkhead to install it. If you really need a cooler, I would wait for MTNTK to get more back in stock or you can go with Van Amberg but I believe their solution requires some cutting and welding... and I think shipping costs are going to hit you pretty hard either way. Good luck!
