Transmission cooler PLUS radiator?

Manual transmissions don't have to worry about "pre-heating" the fluid. Why would an automatic? It's just a gearbox. Radiators have coolers to save money. Are you trying to save money? You won't be saving any when the radiator cracks inside and flushes your trans with antifreeze. Just run a separate cooler and no hookup to the radiator. Guys run a deep pan for more fluid when it's a better idea to run an ac condenser for a trans cooler.