"We need some rivets" said Paul. "OK" I replied, "What kind do we need?". Paul scratched his head and answered, "Dunno - I suppose we need to find out what Jaguar used in 1966".
Where did Jaguar source components in period? Although Jaguar were able to raid their “parts bin” for some components of their XJ13 Le Mans Prototype, most of the car’s major items were custom-made. “Off-the-Shelf” components used in period included things such as Lightweight E-Type (LWE) front suspension & steering rack (albeit modified), instruments, lighting and front wheels (as also used on the rears of LWE racers). However, major components used for the car’s rear wheels, drivetrain, power-unit, braking systems and rear suspension had to be custom made in period.
Hang on - I thought the late Norman Dewis was the XJ13's test driver? Noooo .... a common misconception but, in truth, the legendary Mr Dewis did not participate in all the tests. Contrary to popular belief, there were no "unofficial" tests and the car was driven at all of its outings during active development by David Hobbs.
In 2015 my first car was approaching its "rolling chassis" stage - mirroring events of 50 years earlier in Jaguar's Competition Department. It was then 1965 and William Heynes, Jaguar's Engineering Director still had hopes of seeing the car on track to contest that year's Le Mans endurance race. Time was short but the skilled team working behind closed doors were used to working to such tight deadlines ...