RD,
With a 427 small block you will need heads that have comparable airflow to big block heads. That leaves you with the Yates heads, Victors, or AFR 225's and these are just barely enough. The Edelbrock and AFR heads use mostly off the shelf components but you are rather limited with the Yates heads. I believe that you are limited to using their single plane intake and a dual plane is not available. I'm running Victor junior heads and intake and I don't have any problems with hesitation, loading or anything else. So don't be afraid to run a single plane if that is what you want. I'm also using a Lunati 51012 hydraulic roller cam which comes on at 2800 rpms. This setup is about max. for the street. I would recommend it but realize that this is about the upper limit for street management. Remember that you are only under 3000 rpms for about half a second in the Stoplight Gran Prix.
h dog