I have nearly the same car.1978,though.
Firstly,don't use the stock intake manifold,as it is restricted on the secondaries.You can tell this by the D-shaped holes for the secondaries.The better manifolds have a round shape.
A real good intake is the circa 1969 Pontiac.All the aftermarket ones would be an improvement over the stock one you have,too.
Keep the Q-Jet,but rebuild it the way it oughta be.You can have it built with the intention of freeing up the restrictions like the gasket,etc.Just tell the builder what you are wanting.It's a great carb,it was just toned down because of emissions.
Also,get yourself a Summit 2801 cam,if you don't wanna change the rear axle.It moves the power band up a bit,because there is no sense wasting it down low.You can't get a good launch with a 2.41 rear or anything similar anyway.
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