The square bore manifolds are the ones that came with the Carter carbs, right? Do you happen to have a picture of the one you cut out?
Check out this thread; http://www.v8buick.com/showthread.php?t=173763. I finally picked up an extra intake, so hopefully I can get this mod done over the summer. I can't wait to see what kind of gains I'll get. Between my new dual exhaust (with restrictive Flowmasters) and electric fan it feels like a whole different car. Less than half throttle in low gear gives some nice wheel spin :3gears: . I'm thinkin' about a 50 shot next :Brow: . It'll be one helluva sleeper. And yea, a Carter is a square bore. Quadrajets are spread bore.
There was a pic in the wrenching secrets section a little while back....in fact that is it that cameo refers to .... the intake is just like that but it is green.... but I can paint it red....
Sorry Rock i have already sent PM to Doc:beers2: ,but i am pretty sure he will have another one somewhere in his pockets:laugh: .