If you're going to stay with the original style radiator, it's hard to beat the factory style shroud. They aren't cheap, but they fit and look nice to boot.
http://www.classicparts.com/1963-66-...ctinfo/78-921/
If you're going with a different style radiator, then that becomes a little complicated finding a factory shroud to fit. That might just be easier to go with electric fans.