Brand... MBA or March

Also, what's the difference between 20% and 30% ... more hp between the two? Less charging on one or the other?? Thanks guys!

 

i havn't heard anything on the MBA pullies, typical companies are March and ASP and i think AS&M...

the 20-30% would feasibly gain you more hp due to accessories spinning slower. if you are not running a big stereo or something that requires lots of charge, go for the higher percent. i know i have no trouble with charging, only time i see a dip in voltage is when i flip on my fan switches...and that's only a small drop.

 

get the highest % pulley, then get the alternator pulley from Thunderracing. It allows your charging system to go back to mormal with the Underdrive pulley.