47-55.1 Electric fan setup?

[Matt_50]

With a new water pump in and the radiator installed, I'd like to maybe go with an electric fan set up if I can get it to fit. Nevermind the top radiator hose, still need a different thermostat housing...
Currently no A/C but I plan to get one in the future.

I know absolutely nothing about fans. What size do I need? Fan shroud? One fan or dual? CFMs? Which brands are good, which are bad?

I tried to get some good pictures. Looks like the core is 20 tall and a little over 19 wide. Looks like a little over 2.5 inches between radiator and water pump. There is about 14 inches or core above the water pump.

Any advice you guys have would be awesome.