When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
from what ive heard they are nuts. like you see HP but ive also heard changing your pulleys can mess shit up. something like messing with how much the PS pump actually pumps etc. not 4 sure though. but i hear they r good