putting a smaller pully on your alt will alow your alt to produce more amperage in idle, due to it being able to spin faster or make quicker rotations.... thats about it...
I have for sale a elemtal e15a and JBL 180.2, both are in perfect shape, and dont have one flaw to them. im asking 115 for the 180.2 OBO, and 110 for the e15a OBO. if your intrested in them please contact me at dingo_man2003@yahoo.com