You could use a transmission oil cooler that is available at any auto parts store. I picked one up and have it temporarily installed near the air intake cause mine broke... i know, i know, terrible spot, but i was at college, in 20 degree weather, trying to get this installed at night... when i get it running again i'll take it to my buddy's house where i can get it inside and relocate the cooler. If you find a good place to mount it let me know.
Pat