I bought these to try and make an ITB setup for a boosted application, however the way the valve works it will not open wiht pressure on both sides. this would be great for a n/a application. The valve will give really smoothe throttle response.
$55 o/b/o shipped I paid like 70+shipping

best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com