Radiator reccommendations?

For "A" Body Mopars the width will be 22". --- The width of the tubes and the amount of fins per inch are important. -- For example a 2 Row with 1" tubes can be better than a 3 Row with 5/8" tubes. -- There seems to be a lot more options in the Aluminum Radiator market than copper/brass etc. -- A friend of mine has a Champion 3 Row in a 68 Barracuda and he says it cools fine. - His car is a pretty much stock 340 - 4 speed.