[Hawghauler]

I haven't done it, and I don't see how it would help. I've put larger pulleys on mopar alternators when they've had high revving built engines before. They had a real problem with that in the 70's. I can even see over driving it with a smaller pulley, but really, if it's not working well enough the best thing would probably be to rebuild it or replace it. I haven't rebuilt a pump yet, but I understand that it's not too complicated or difficult. I've rebuilt half a dozen hydraboost brake boosters with success, and found them to be rather easy to rebuild. Pumps are next because the new GMC's over work their power steering pumps to make the hydraboosts work.
If you try it, let us know the results. It might be an interesting experience.