Transmission cooler recommendations?
 

I have a lift and 38" tires transmission is getting really hot . I need to upgrade the transmission cooler what is the most efficient cooler out there ?

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

Is there a diy kit somewhere ?

my truck is 2003 hummer h2

Any info is greatly appreciated

thanks

I installed a TruCool oil cooler. It came with the bypass. Got it on ebay a while ago. There is a thread on one of the forums that has pics on the install. Didn't have any problems but wanted to play safe and bypassed the radiator.