Dave - as Tom S. stated, we have been suggesting the Pontiac, some Buick, and some Mopar for street use; but even in some race applications, the same thing is true. Ask Troy about the difference in using Chevrolet airvalves vs Pontiac airvalves.
If one can develop a continuous variable ratio transmission so that the engine can run at a constant RPM, then any carb can be calibrated for the requirements at that RPM (although the calibration would probably still be off at different loads).
I have never said one carb cannot be recalibrated to work as well as another. It is just easier with some than with others.
I don't personally use the 1985 and newer AFB's whether they say Carter or Federal Mogul or Weber USA or Edelbrock (same thing) because of reliability issues, regardless of calibration. There are vast differences in the pre-1985 and post-1985 carburetors.
Jon.
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"Good carburetion is fuelish hot air". 
"The most expensive carburetor is the wrong one given to you by your neighbor".
If you truly believe that "one size fits all" try walking a mile in your spouse's shoes!
Owner of The Carburetor Shop, LLC (of Missouri).
Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings.
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