unorthodox racing pullies

hey i am still wondering if anyone has installed a full set of unorthodox racing pullies on their 350z? i have asked this before and have also searched all over this site and haven't heard anything about them...please tell me what you guys think about them...thanks

well i have them on my 300zx and they work beautifully buy them for sure decent amount of hp and torque gains too

You're underdriving everything so, in theory, it could strain your A/C or alternator a bit...but I've never heard of any problems.