Putting on the alt. pulley shouldn't change its power output much if you put on the crank pulley, cause you have alread slowed the whole system down. Unit 5302, you are correct that putting on the pulleys would increase bearing life (the only fricticious part of the alternator), but at low RPMs there still could very well be charging problems, cause even in the stock setup, the alt. can't produce its full 75amps until 1.5-2k (something above idle). I don't agree with what your saying about the power regulation circuit though. I don't know how the power is regulated, but if it is by a variable resistor/potentiometer, then running it with stock pulleys, so that it has to lessen its output, would actually wear it out faster, as you are using the resistor more, and therefore heating it more which is what eventually kills resistors, or any electrical circuit.
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