Originally Posted by BrianBrave

Least expensive is ASP Racing. They have an 14% overdrive pulley with Dampener (same as renntech and EVO) for $970 - No ECU tune - keep the stock belt - easy bolt on (with a big torque wrench).

http://www.aspracing.com/frame.htm

Ask for part number 331380 (not listed on their website) Here are the pics they sent me.





Then there is a new kid on the block (leading edge technologies) that makes a 20% Overdrive Pulley - but you need a new belt and I found no way to contact him, email, snail mail, phone or fax. Heck I can't even find their website anymore.

And then there is EVO - similar to Renntech - they offer a pulley kits with and without the tune - and with a harmonic dampener and without one.

http://www.evosport.com/product/default.aspx?catid=317

Scroll to the bottom of the page for the kits for our engine.

Good luck and let us know what you decide and how it works out.