Yes, there's a minimal tranny cooler built into the bottom of the stock radiator. It's really just a section of tranny line that runs across (inside) the bottom plastic section of the radiator. It's really small as far as cooling is concerned.

I think I paid $165 for a new radiator from www.radiatorbarn.com. Much better than the dealer price of $600. Note that when you select your year and model, the 4 cyl and 6 cyl engines use the same radiator so it's strange they only list 4 cyl - until you see the full specs of what that radiator is for. (I had cracked the bottom of my original radiator on rocks off-road).