there are a lot of fans and shrouds people have used and write ups for them. As for how to switch it I use a standalone but im sure there are a bunch of good products out there that can control them. You can also find heavy duty relay kits cheap as well. I have mine wired on a single speed and its an SHO fan.

instead of cutting by the upper hose I heated with a heat gun and used a pipe to dent it in

 

I have a villager/quest fan, fitted nicely to stock rad but i cut the shroud because i bought a griffin radiator

 

Holy thread resurrection!

I'm pretty sure one of these would be more than adequate for our cars...

https://dewitts.com/collections/spal...shless-fan-kit