I had a powerdyne BD-11A...it was ok. I only saw 6#'s with the 9# pulley. Their service is better. Now Vortech and Paxton have such better prices, the powerdyne doesn't have the price advantage that gathered them the most sales.
I have a S-Trim now. I like it. More boost. But more boost means more maintenance and broken parts. I have rebuild my rear, replaced axels, new clutch, and redone my synchros...but that is the price you pay for more power....with my powerdyne, I only had to sway my tranny from a T-5 to a Tremec.
Here is my opinion.
Get a sticker on your car, it makes more than enough power...and for a fraction of the price.
