1-NEW ENDERLE FUEL INJECTION PART # 76-107U, FOR DUAL 4150 FLANGE CARBS THIS BLOWER LINKAGE KIT FITS DUAL CARBS FOR A BLOWER SET UP WHEN MOUNTED SIDEWAYS. These carbs include boost-referenced power valves, and the specially designed throttle body features built-in channels to guide excess fuel from the top of the throttle plates, around the throttle shafts, and back into the intake manifold to lessen the possibility of fuel leaking onto the intake.