Well, I went with this unit https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Installation wasn't bad, I welded bolts to pieces of angle iron and welded those to the front crosspiece of the frame, then used 3 inch bolts with tubes to stand the top off from the core support, just used U nuts in the core support
Temps have consistently dropped 50 degrees, from 180 to 130 on the street, and more importantly, from 280 to 230 on the track. No more changing 7 qts of trans fluid after every event. Came with enough line to do the install, couldn't be happier.