Trans cooler for th 350

I have a 31 Ford coupe and was wondering what type of trans cooler is best for a "under-car" application. And how well will it work?

 

For under the car, you need a cooler that incorporates an electric fan. Several parts houses sell them.

 

...use a small cooler (Speedway sells em, $20.00) called a 4 tube, mount it on the framerail beside the trans where it'll catch some air; it will work just fine, don't need no fan, specially in a fairly light car like an A.

 

Here's what I had on my A.

 

Thanks Rusty solved a big delema!!