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@MB, here is another belt option. 1) Space the alternator out by 1 pulley sheeve and run the existing belt off the rear groove. Buy a 4 sheeve pulley for the crank and the water pump and run the additional belt so now both belts will be the same. You will need a double adjuster pulley as well. Its a bit more work, the additional overhung load on the front bearing will be minor i believe.