@GRIZ;
You may or may not be aware of this little fun fact tidbit. Dan Gurney was a tall man, just over 6ft. tall. The Ford Mk IV GT40 had very limited headroom. So the engineers on the Ford race crew cut a hole in the roof of his GT4O to give Gurney some additional headroom and then riveted a shallow domed cap over the hole, that Dan Gurney referred to at "the bubble". Here is s photo of the GT40 J-Chassis, that Dan Gurney drove at Le Mans, along with A.J. Foyt, showing that minor roof modification. The car has been restored and is currently on display at the Henry Ford museum in Dearborn, Michigan:
I have seen a number of Ford GT40's with historical race provenance at a number of car shows and museums that I have attended and/or visited. The Ford GT40 pictured below is currently owned by Miles Collier and is part of his magnificent automobile collection at the Revs Institute in Naples, FL. My wife and I visited and toured the R.I. back in March.
In mid-June 1967, this Ford Mk II-B GT40, which had started life as No. P/1031, a 7-liter Mk II GT40 built at Ford Advanced Vehicles in Slough, England, mysteriously changed identity and became No. P/1047. “There were a lot of shenanigans with the GT40s,” recalls a Ford insider. “At the start of each season a large bond had to be deposited to ensure its appearance on the start line. In the event of an accident that made it impossible to repair a car before it was due to race again, it was less expensive to switch chassis plates with another car than forfeit the money that had been deposited…” That is what seems to have happened to this GT40, which had already completed a grueling season’s racing in 1966 before being uprated to 1967 Mk II-B specification, with its 427 cubic inch V8 engine modified to deliver greater power, reliability and durability with a “dry-deck” cylinder block and a new induction system.
For the 1967 Le Mans 24-hour race, Ford, who was very anxious to repeat its sensational 1-2-3 victory of 1966, entered a six-car team. There were two Mk II-B GT40’s, (this car), which ran as No. 57, painted light blue, and No. 1047, which was painted gold and ran as No. 5 – and four of the new lighter and more aerodynamic Mk IV “J-cars” with bonded aluminum honeycomb frames. Additionally Ford-France entered a third Mk II-B (No. 1015), while JW Engineering, which had taken over the FAV operation in Slough at the beginning of 1967, ran a 289 cubic inch GT40 and two 305 cubic inch Ford-powered Mirage sports prototypes. This car retired after 18 hours with a seized engine. GT40 No. 1047 had already crashed and would not race again that year. After a hasty rebuild by Holman & Moody in Charlotte, North Carolina, this car, now fitted with the chassis plate of No. 1047, returned to France and won the 12 Hours at Reims just two weeks after Le Mans. It was the last Mk II – and the only Mk II-B – to win a race.
AVB-AMG