Ok - this answer is harder to pin down than I thought. Paul - early 70's body/frame - driving in 1986. I thought that Paul's was the senior Cobra. Thomas - built in about 1985 - maybe the only TCC car driven by the owner in two continents.
Thomas - how many countries have you driven your Dax through?? Matt looks like the oldest TCC car to actually have a Ford engine!!!
Another veteran car (built by the owner) is Kirby Quirk - I believe he built his Unique about a dozen years ago.
Next?