Transmission cooler is the cheapest upgrade the original radiator can go out anytime. I'm thinking hes already aware of the transmission problems due to radiator.
Mine is the darker grey:/ yours is the lighter one which looks nicer i think. I only go mud videos right now might go 4wheeling this sunday if i do ill get crawling footage
4wheeling in a pathy takes more driver experience then a jeep listen to the good advice though couldnt agree more the pathfinders are very capable just dont expect it to do the work for you keep 4wheeling have fun