Interesting! Hadn't spotted that one before. Here is the photo you linked to Terry. Kiwi Ron Butler worked for Shelby and I believe was chief mechanic. Maybe he was working the spanners on Horst's car?
It was Ron Butler who arranged for Paul Fahey to go through and clean out the Shelby workshop in 1970, many of the parts from which went onto his '70 Mustang race car.
