Zach - "Puller" electric fans, on the inboard engine side of the radiator are much more efficient than "pusher" front mounts. Electric fans come in all sizes and configurations. Some are real low profile and require only about 3-1/2" installation space and still supply adequate air flow. I don't know if you plan on running your electric as a backup to your conventional engine driven fan. If so, you might not have the room for a puller. Painless makes a good reasonably priced thermostatically controlled relay kit to cycle your new electric fan. Just screw the thermostatically controlled ground switch slug into one of the water jacket ports on your manifold and run the single lead to wherever you chose to mount the relay. The directions from there, are really pretty simple. Most hot rod fans come with their own shrouds and thru radiator ties to mount them up with. Core support brackets for mounting sometimes need to be custom built for that perfect fit custom look.
The Wheel Shoppe carries a nice hot rod fan kit that's as windy as any of them. Roger is really a great guy and real helpful. He might be out of the way a bit but you still might want to check with him before you buy one. last time I checked, he had big, low profile puller fan kits for as low as $130.
<a href="http://www.thewheelshoppe.com/" target="_blank">http://www.thewheelshoppe.com/</a>