Sounds like a lot of guys aren't to happy with them. they look good on the show cars.

http://www.yellowbullet.com/forum/showthread.php?t=581607

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time