Here is how we do it...
I have the big PTE front mount IC. It is about 6 years old and was the largest at the time. I do not remember what model it is but it takes up every bit of the grill area. The tranny cooler is mounted to the bumper bolts in front with strap T-6061 Aluminum 3/16ths strap and the bacl is made with L bracketts that bolt into the radiator shelf support also T-6061 3/16ths Strap aluminum. All lines are #6 JIC Teflon stainless steel braided hose.
Only had one bad occassion and that was when I hit a rabbit one time. Broke the cooler off. Rabbit got the worse of it tho, dust, all that was left. Anyway, here is my WE4 install.
PICS