Stuffing a '65 Radiator into a '64

While I agree a crossflow has better cooling potential, I'm working with a stock driver. Want something to keep her on the road without spending too much or having to make too many changes. I just lost my garage space and got her up and running.when my situation improves, I will likely stuff a V8 in her. At that point I will be looking for maximum cooling. Ut for now, a stock type radiator will be adequate.