What brand radiator are you guys using to cool your 440?

I'll come back and add this. Don't fall for the old myth that you need to slow down the coolant so it stays in the radiator. That's a complete total myth that's been busted so many times it's not funny. The key is getting the coolant OUT of the engine as quickly as you can and into the radiator where the radiator can shed that heat. The slower the coolant flow, the longer it stays in the radiator, but the longer it also stays in the engine heating up. You want it out of the engine quickly. That's why it's important to get a radiator that's very efficient, so that it can shed the heat in the coolant quickly and return it cool to the engine.