Does anybody have one of these installed??? I'm still debating on getting one, and I havent made up my mind yet. Any opinions would be appreciated!!

 

Id go w/ the asp if your getting pulleys

 

i have the ASP unit on my 99z.

couldn't really notice a difference, however i had only driven the car a couple weeks and i was doing mods on a weekly basis.

subjectively i thought i felt a bit faster rev up, and maybe a little more on the top end.

on a side note, i've had no problems with charging in any driving conditions. and i've only thown the belt once...right after startup for no apparent reason. now i carry a 15mm endwrench in the glove box in case it happens in a "less than ideal location"...i can reroute the belt from the top in about 5 mins