Before spending tons of money on a trans cooler setup kit. Try the DIY approach.
Use the Trucool SR4588 Transmission cooler. Its more than sufficient to meet the cooling needs of the RE7RO1A 7spd auto.
The 7AT should have a tube warmer that is located in the radiator, probably in the bottom. This is just to warm the fluid in colder climate to bring it to a more viscous level.
And I'm assuming there is an Auxiliary cooler as well, probably sandwiched between the radiator and condensor.
If there is or is not an auxiliary cooler, I would still highly recommend running the SR4588 cooler up front in direct path of air flow if possible when mounting.
Make sure there is atleast an inch gap from where mount the external trans cooler to the surface behind the cooler such as the condensor. This will allow ample air flow through the cooler and keep it working efficiently.
The low pressure drop coolers such as the Trucool SR4588 are designed to flow only through the upper portion of the flues until the fluid is warmer. (SUPPOSEDLY...lol)
You can always run a thermostatic bypass, but unless you live in temps that see 35deg and below often, it shouldn't be needed.
Other than that, if you live in extreme cold climates, don't drive like an a$$hole until everything is at operating temp.
