Use a factory manifold and find a good rebuilt or core Q-jet, It will look better and outperform in my opinion. Definitely keep the 2bbl set-up though.
You are dead on with this advise. I never realized just how good a stock intake and Q-jet were until I recently removed the Edlebrock intake and carb from my 326 and installed the stock 68 intake & Q-jet from my Bird. WOW!!!! What a difference. The car even idles better. My friend Mike said he would have never imagined there would have been such a difference. The car even sounds better!