Spartan - as Martin mentioned, opinions are opinions, and are not meant as derogatory toward an individual; no offense was meant by me, and probably no one else.
If you are going to use an original intake with an aftermarket carb, the mounting gasket is as important as the bolt pattern!
Many of the O.E. manifolds have heat cutouts, and one needs to compare the gasket to the intake manifold, then the gasket to the carburetor flange to make certain there are no leaks. If you use an aftermarket intake, you can introduce other issues.
You also need to verify that the throttle plates do not hit the intake because the carb is larger (CFM) and has larger throttle plates.
One thing to always remember: if you use original parts, they are engineered to fit; if you use aftermarket parts, YOU assume responsibility as the engineer.
Jon.
