[muns53]

I put a tru-cool in series with my stock tranny cooler - bought it from Dieselsite when they were selling them. It was super easy, I just mounted it all the way up front on the brackets in front of all the other coolers. Way easier than trying to take the stocker out and replace it with something else - there is no room for fat fingers in there!

My tranny temp doesn't break 140*F now, which is down 30*F-40*F from stocker alone. I don't tow much, so don't have any towing data for you.

FYI, I remember Bob said some people put two tru-cools in series with their stocker and the flow rate still matched OEM specs. Don't take my word/memory for it, though, keep asking around. Maybe ask Bob himself.

Good luck!