Holley 390 and Offy Single quad intake questions

I recently put on a holley 350 cfm 2bbl. I used a carb adapter and the stock manifold. It definatly woke up my engine. But i feel that there is restriction with that setup so i bought a super 6 manifold. I dont think you need too much more than that with the stock cam. The carb came with an electric choke and I adjusted the linkage.