I am buliding a 69 cuda 440 with twin afb's on an old Weiand Manifold # wd20.The carbs are S9131 AFBs .1966 383/440.The motor was tired and knocking.One carb is painted a gold color?The manifold is low profile and has four ports for each carb.Dual plane.
I am on running 1 " carb spacers which...