Those pics were from one of the older forums. They are radio shack computer fans. I did the same thing and it looks good, but it doesn't work worth a shit. Trust me you don't want to wast your time. They didn't push enough air. Things like oversize radiator, impeller, cool head, and engine ice or a much better use of your time.
Mounting a raptor fan or something behind your radiator is almost imposible do to the steering stem.