Aftermarket Kit to keep Transmission cooler

[chevreb]

Question for the group. I am in the middle of replacing the 6l80 transmission on my 2012 Tahoe LT. I know for 2014 to 18 they have a thermostat to keep the transmission fluid cooler question is is there a kit that can be added to the 2007 to 2014 to cool down the transmission fluid? I'm having to replace the transmission due to the torque converter failing and figure while I'm here might as well see if I can keep it cooler. Thanks in advance for your help.