For 1967 Ford USA decided to concentrate its resources on a second Le Mans win and fielded the GT40 Mk IV, a newer car redesigned in the US with a different chassis and a different body. Bailey redesigned the two GT40s entered by John Wyer of JW Automotive for the manufacturer's championship. These were lightweight variations of the GT40 with a slimmer windscreen and altered roof line, cut off tail, and lighter aluminum body panels. Entered as the Mirage M1 with Gulf Oil sponsorship. Ford left the Mirages and privateer GT-40's to represent them in the intervening championship events at Monza, Spa, Targa Florio and Nürburgring.
