Rad help with 67 dart .

I bought a 22" Smiths radiator for my duster, has 3" tanks and two 1.5" rows. Was not cheap, but you buy cheap you get cheap. Spend the money once buy a good rad, shroud and fan. Run at least a 185 thermostat. I have a 525 HP Big block in my duster, i am running 200 on a hot day.