i have the Unorthodox racing 3 pullet set(better
). I noticed alot better throttle response. UR pulleys will give you more hp too. ive had them for about 2 years now with no problems at all. When i had my stereo turned all the way up at idle, my lights would dim alot, so i got a capacitor and the lights barely dim. My car doesnt shake and I can have the ac and radio on at the same time. Im running a 1000cca battery.