Transmission cooler recommendations?

[Hammer]

I have a lift and 38" tires and it seems oem cooler isnt enough. I need to upgrade the transmission cooler what is the most efficient cooler out there ?

I also need thermal bypass because of the the really cold winter here in Finland

Is there a diy kit somewhere ?

my truck is 2003 hummer h2

Any info is greatly appreciated

Thanks !

[1cool devil]

try b&m have eletric fan and cooler

[H2R]

The below cooler fits well in the front of the radiator you might try to route this after your radiator and see where the temp is. I dont have to freezing temp in the southeast and it works perfect for me keeping temp at 150 degrees all day long.
http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=2&Product_Code=4739-1&Category_Code=tru-cool-hd&Product_Count=4