I have the same problem as the first 2 posters, and a BIG trans cooler right in front of my radiator, behind the grill, which is where I reckon the radiator gets most of the air from since there's a giant bumper blocking the lower part.

There are some guys (Goody if I remember right) who are using the stacked plate style cooler and located it in their wheel well where it gets airflow, but is not in front of the radiator.

I am in the middle of installing a clutch fan in my car, and a shroud. If after that I still have cooling problems I'm going to get a smaller trans cooler and put it in the wheelwell. I dunno about the other guys but I already have a deep trans pan..