Give your FE powered street rod dual-quad power and nostalgic looks with the new Edelbrock RPM Air-Gap Dual-Quad intake manifold. Designed for 1960-later high-performance street 390-406-410-427-428 c.i.d. Ford FE engines with low/medium rise or Edelbrock Performer RPM heads number 60059 or number 60069. The manifold carb pad is setup to fit Edelbrock carburetors only, will not work with other square flange carburetors.