Transmission cooler

If you are running an auto trans. what type of cooler are you running? I am going to put my new radiator in and I need to go get a cooler. ANY SUGGESTIONS? Also, where is the best place to get it?

I always ran am external cooler....got it at napa for a truck....lol....I mounted mine about an inch off the firewall because we were not alowed to have any liquids run in the cockpit....some rules dont say one way or another and i have seen people mount it on the bars in the cockpit....but i do not like the idea of any hot liquid in there....lol...you can also mount them in front of your radiator....Hope this helps...any questions give me a call...