Rad help with 67 dart .

I think I'm burning myself out looking for a radiator for my 67 dart, originally a 225 ,will be 440. I'm reading so much it's making my head spin. Champion lists a 2 core that's 22" and they show a 26" , I dont mind cutting some if it works better,they dont show a 3 core, do I need a 3 core? Do I need cross flow or whatever its called? I would like electric fans . Anyone have a similar car that can point me in the right direction?