4C FED is right, the model 60 draws less power '14 instead of 17 amps' and pulls 2800 CFM instead of 2500 and is advertised as a direct fit for s-trucks. The only thing the syclone has is the name.
it's not all about cfms. if the fan/fans cover more area then it will cool better than one that only covers half the area. black magic is not sufficient for our trucks. dual 11's or 12's are much better.