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Both the 5.4 and 5.8 crankshafts begin life as identical forgings in Ford's Windsor, Ontario, Canada plant, which is certainly appropriate for the 5.8. There are no center counterweights on either crank, and all major dimensions, such as journal dimensions, oiling, and flywheel retention, are identical. Because the GT500 is available only with a manual transmission, all are fitted with a pilot bearing. The only differences are balance and harmonic-dampener retention.