I use an electric fan from a 95 Ford Windstar van on my Chevelle w/ 454. It cools fine, and the shroud fits my large radiator like it was make for it. There are two fans, one 10" and one 13"....you can wire them to come on together, or one at a time depending on temp. But if the only reason you're taking your regular fan off is to free up a few horses, it isnt going to help much....you certainly wont feel it if that's what you're thinking.