Carburetor, Ultra XP, 4-Barrel, Holley Flange, No Choke, Dual Inlet, Black Anodized, Methanol, Model 4150, Ultra XP, 4-Barrel, Square Bore, No Choke, Mechanical Secondary, Dual Inlet, Black Anodized, Increased fuel volume of each bowl extends length by .125” per bowl (.250” overall)
GRAY WITH BLACK BILLETS. NEW LONGER FUEL LINE 9-3/4" IS REQUIRED - Normal is 9.5"