Carb And Intake Help

Your setup sounds close to mine. I run a Holley 650 DP. Depending on what you intend to do with the car, i.e. race it or street drive, that will kind of dictate the manifold style. Single plane is meant for high RPM applications where as a dual plane is more of a lower RPM design. My suggestion would be something like an Edelbrock Performer RPM or Performer RPM Airgap or equivalent.

http://www.edelbrock.com/automotive/mc/manifolds/ford/rpm-air-gap-289.shtml