1967 Formula S

Sorry, 273 Commando motors never came with duals. The exhaust was larger though with a resonator and an exhaust tip. All 64 - 67 273s came with solid lifters, but the Commando motors came with a more radical cam, 10.5:1 compression, a dual point distributor, black wrinkle finish valve covers with aluminium finned plates, a chrome oil breather, chrome pcv cap, and a chrome low restriction air cleaner with a red "273 Commando" decal on it.