I have a 408/727 combo that will be street driven with a 3800 stall converter.

I bought a stacked plate cooler from derale that features -6an fittings and measures about 9x9 inches by 1.5 inches thick.

Is this adequate being placed out in front of the radiator?
Also, what are your positions on connecting in tandem to the "cooler/heater" in the radiator?

Any information or insight would be appreciated.
Everything I am doing is ALL Brand New so I want to make sure everything is engineered properly.

My common sense side tells me I will be ok with this, but I am open to suggestions/insight in case my thinking is off.

I do not have a trans brake.