Alternator question.

[RichLo]

you can switch pulleys with your stock alternator if that one is too small, you just won't get the rated 100 amps at idle that they are claiming.

 

[df2x4]

Would that use a stock belt or would I have to find a bigger belt? I can see it would be bigger than the 105amp belt but would it be bigger than the 120amp belt?

I'm willing to bet it's the OEM sized pulley, they use a lot of stock photos on their website. You could always email them if you want to clarify.