In mid-1972, the E38 option was superseded by the more powerful and greatly refined four-speed transmission E49 option. This drew comments from "Wheels" such as, "The raw quivering power is instantaneously on tap and with a ratio for every conceivable situation the Charger just storms through. It would take a Ferrari Daytona with racing driver Jackie Ickx at the wheel to stay with one". All E49s came with a Track Pack, 21 of which featured the huge fuel tank with dual fillers. The E49 six pack engine came with a baffled sump, tuned length headers, special shot-peened crankshaft, connecting rods, pistons, rings, cam, valve springs, a twin plate clutch and of course the triple 45 mm dual throat Weber carburetors. Chrysler quoted this engine as producing which, in a car, made for rapid acceleration.