Mike , I had an electric "helper fan" on my hot engine when i bought it...it actually blocked more air and at speeds ran hotter..I gained almost 5 F by removing it...it might help on idle...but...no pusher fan in front of engine would be my advice...I run stock fan...after many improvements I reduced my temps from 230 to 190, little by little

a friend with supercharger and no room has 4 electric 'puller'fans , two larger ,two smaller inset in an alum. shroud to cover almost entire radiator area..to get as much air as possible...