Having created enough space to go with a mechanical vs. electrical fan, I now seem to be limited to a 16" diameter fan blade. Most available are flex fans from summit, flex a lite, etc.. So do you think a 16 inch fan is big enough to cool a 460 mild performance engine/c6 trans. with big new aluminum radiator? I'm asking because it seems a 16" mechanical would be as goos as a 18" electrical, but not sure. I'd prefer to use the mechanical set up but not sure if blade diameter is enough. Radiator big enough for 19" fan, but space between bottom radiator hose and the mechanical fan will only permit 16" or smaller. If I went electrical I can mount fan without hose clearance issues, but like stated above prefer the easy route!