well they will free up Extra HP and they won't be as heavy as the stock puleys....
If you have a very powerful stereo and you notice a draw on your headlights then w/ pulleys it would be worse especialy when sitting still...
I have a set of AEM Pulleys to put on my car and just haven't had a chane to put them on as of yet..
I wish I had some additional input but that's all I have at this time...
