Underdrive Pulleys, who's got'em???
 

Alright, I'm looking, possibly in the market for some UnderDrive Pulleys for my 5.3. I know they don't create or make more power, but they should free up some more power.


Looks like there are just a few choices, between MotoBlue, ASP, and JET.

So, who here is running what, and what are your experiences, opinions?

Here are some links you can check out:

http://www.rpmoutlet.com/gmsuvasp.htm

http://www.thunderracing.com/catalog...9&pcid=111

http://www.jetchip.com/shop/shopdisp...=10&vall=1



which one looks like the best complete kit?


Oh, also almost forgot to ask, will I need a new longer belt after installing one of these kits???