I think I'm going back with Edelbrock. They're still family-owned, I've NEVER had an issue with one of their carburetors (and I've had four of the things on various cars), and hell, I may still have a 650 Thunder AVS in the garage somewhere (which seals the decision).I luv my Edelbrock
With the Derale relay I'm running, I'd just run a wire that's hot with the key on to trigger it after hooking the ground up to the mounting screw (the Atomic EFI triggered the ground side of the relay).A suggestion on the fan controller: you could add a toggle as well to give you more control over it. I have one installed in my car inline with the controller now, but I have had it installed to manually turn the fan on as a redundant safety just in case the relay in the controller were to fail. You could do that to get your car going again while waiting on a controller....
I just know from experience that I'd forget to turn the thing on.The reason I mentioned a toggle switch is because, as I understood it from years ago, there were 2 reasons electric fans became prevalent. To reduce engine drag and once you were going a certain speed the fan acted like a block and actually impedes airflow. With an electric fan, and later with the advancement of computer control, electric fans could be turned off when they weren't needed. For example, when the car is already under a preset temperature (we'll say 185) OR if the vehicle was traveling at a predetermined speed (we'll say 45 MPH) the fan would be turned off. The toggle switch would at least give you that control so the fan wouldn't needlessly spin constantly. I'd like to think it wouldn't impede air flow like the old steel belt driven fans as I think air speed would most likely overpower the electric motor, but it wouldn't hurt to have it shut off instead of being pushed while running. Just my 2 cents - and probably not even worth that....
I just know from experience that I'd forget to turn the thing on.