Manifold you are purchasing is a spreadbore, you may wish to consider purchasing a Quadrajet and having it calibrated to 350 HO specs by Cliff Ruggles. Banshee provided his contact info.
With the vacuum secondaries on the Quadrajet, the carb "size" is controlled by engine demand, up to 750 cfm with the body used on 68s and 69s.
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching
