Underdrive pulleys
You could use underdrive pulleys to slow down all of your belt accessories. They make them for most V8's, I'm not sure if they are available for 4 cylinders. They use them to free up horsepower in racing applications, which is normally at higher RPM. An underdrive pulley on a water pump might not be so cool on a car with a lot of grill block though. You might be able to just put a larger pulley on the power steering pump and get a longer belt.
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