Radiator and Electric Fan

[magwakeenercew2jh]

Can any of you guys give me some direction on what is the best set up on this?

'83 Stepper with a 350 transplant, which came with a new 4-core radiator. I guess the fan shroud wouldn't fit, and the guy said, "either big-block fan shroud or electric fan set up".
I'm not going to question why small block to small block caused the shroud to not fit, because I wanted to go to an electric set-up anyway.

So, the question is, what is the hot set-up (no pun intended). I need to have a temp (on/off) control, too.

Thanks.

Starting all over again...This time with an '83 ...That time it was a '72.