Your opinion:did I buy to small a radiator??

The black rad is the stocker out of my slant 6, non-ac rad. The aluminum one is larger(holds 1 1/2 more quarts) and does not have a trans cooler tank, I will be running a separate transcooler. The converter is stock and 2 extra quart trans pan. The engine is a mild 360 magnum which I have bought a high volume aluminum water pump for. No air conditioning. Has power steering.I know that the aluminum dissipates heat faster and the the hi-vol water pump should help some. I also plan on running a shroud and a flexalite lightweight fan. Your opinion????????????