transmission cooler

I too use an Autometer and it reads 160 to 180 without a trans cooler and that's with a dynamic 727 race trans using an aluminum deep sump pan. Granted the weather may be different here, not as cold in the winter, yet the summer months are hotter than hell.. Sometimes 110+

I've considered a trans cooler but as you can see, have little to no room in the bay and the Griffen radiator hasn't a cooler. Any suggestions?