Changing pulley wheels on Alternator?
So my alternator just went out in my 4.0 93 YJ. Its only pushing around 10 amps to the battery. I went out and got another one from a junk yard (this may not be what people recommend, but its what my budget allows for right now) that seems to be the exact same alternator, same manufacture, same bolt line up. But there is one difference, the pulley wheel on the new one is a bit bigger then the original one.
I tried removing the bolt that holds the wheel on but it is fairly stuck, even after applying some bolt buster. Also it is quite difficult because the wheel always wants to turn on you. Does anyone have any recommendations on how to remove this wheel?
Also is it necessary to remove the wheel. I figured that a smaller wheel would be better since it would turn more revolutions, but thats just what made sense in my head.