The nicest thing about beating one's head against a wall with inappropriate modifications is that it feels so good when you stop! The adapter needed to fit the Weber carb to the aftermarket intake manifold dramatically reduces the efficiency of the carburetor. That adapter would need to be several inches tall with a very gradual taper to avoid turbulence that messes with the fuel distribution, which would create serious hood clearance problems.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!