I have a working alternator with badly ovalized pivot holes, and a non damaged, but non working alternator. I am wondering how hard it would be to remove the front section, with the rotor, and a double pulley attached, and put it into the working alternator, thereby having non ovalized holes, and the double pulley needed, in the electrically functional alternator.

Short of that, wondering how to remove and replace the pulley if i do not have an impact wrench.

Thanks!