Our carburettor set, factory style aluminium intake manifold and alloy cold air box, along with duct hose, insulating washers and gaskets, supply the pieces necessary to convert your 100-4 to full 100M specifications, recreating the competition package that only one third of the stock models received. The carburettors are correct except for the choke levers; for a completely authentic appearance use the standard 100-4 jet linkage.