In our quest for power, we called Edelbrock Performance, who provided us with a Performer RPM intake manifold and a 600-cfm carburetor. The Performer RPM is an outstanding dual-plane manifold because it delivers great low-end torque, yet it works well at 6,500 rpm. The Edelbrock carburetor employs smaller primaries for fuel efficiency and torque. Larger secondaries perform the job well at wide-open throttle. You can have it all with the Performer RPM. However, we learned that with our application a Performer 289- or 500-cfm carburetor would have worked better for our needs. Because we're planning for power, we've chosen the Performer RPM and 600 cfm.