Found several links re:trans coolers:

http://www.bmracing.com/noflash/index.html

and

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3228&prmenbr=361

B&M also make a model with an aux. cooling fan available from Summit Racing at:

http://store.summitracing.com/default.asp?target=search.asp%3FType%3Dbysummitpart%26Part%3Dbmm70298%26Search.x%3D1%26SearchType%3D Both

PermaCool also has several to choose from:

http://www.permacool.com/Catalog/Cat_page04.html
or
http://www.permacool.com/Catalog/Contents.html


Some coolers also from Fluidyne:

http://www.kartek.com/fluidyne/fluidyne.html

I think I'll start a separate thread to see if anyone has any firsthand experience installing and using anyo of these.

Gary