Originally Posted by wstar

I put Stillen's underdrive pulley on my car ages ago (been on for 14K miles now btw, no issues at all with it, just FYI for those scared of pulleys). I'd rather stick with the Stillen one since it's already on the car, but I might try out your 10% overdriven alternator pulley just to bring my alternator back up to speed a bit (since I'm running that tiny PC680 battery as well).

Anyone have a clue about how belt fitment would work out on that combo? I'm guessing the tensioner can make up the difference using the belt length Stillen specified, doesn't look like a huge change on that little alternator pulley.