I'm switching from a T-56 to a RMVB TH400 w/ trans brake and the deep pan. Which B&M cooler would work best? Does it matter that I have the deep trans oil pan when I choose the cooler?

 

I used the 24K cooler and it worked but with the hot weather is wasn't enough. I just installed a Hayden 3/4" X 10" x 16" and my temps are much cooler now. Rarely goes over 150* unless I am WOT a lot. Even then, it cools down very quickly. I think location has a lot to do with it as well. My B&M was mounted dope style and my Hayden is mounted in front of the radiator. A deep pan will definitely allow things to stay cooler as well.