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One day after Ford's second Le Mans win, new regulations for 1968 were announced, which rendered the Mk IV obsolete. Ford brought the Mk IVs back to Holman & Moody and had all four rebuilt to resemble the winning chassis, which according to the ACO was J-6. The cars were painted red and received a 'Gurney-bubble' in the roof to be an exact replica of the winner. For a while these 'winners' were shown at various motorshows. At the end of the year, J-6 was handed to Foyt for his fine debut and winning Le Mans drive. Two additional honeycomb chassis were constructed and used with little success in Can-Am under the G7A moniker, bringing the total of 'J-cars' constructed to ten.