I just ordered an overdrive water pump pulley on line to address some of my heating problems and now I'm wondering if I did the right thing. It is a 15% overdrive pulley designed to work with my stock alternator and power steering unit brackets, but I'm now wondering if it will throw an excessive load on my p.s. pump, my alternator and my water pump bearing. Also, I just had a mechanic replace the V belts on my car and I am hoping that the drop from a 6.37" pulley to a 5.4" pulley will allow me to adjust the difference. Oops! I should have taken the time to think this through. Since the crank pulley remains the same diameter, neither the alternator or the p.s. pump will spin any faster. Just the fan. And I just removed the V belts and the alt and the p.s. pump were adjusted all the way out, so I'll have to drag the belts down to NAPA and see if I can come up with belts that are about 1" shorter.