No Joke Alex is serious ,
“Advanced Prototype” 5010, only the tenth Shelby Mustang to be built, was delivered to Shelby-American on December 18, 1964, and Shelby’s extensive performance modifications were completed by January 25, 1965. Chassis 5010 was then sent to the engine department to be supercharged, thereby serving as the lone prototype test bed for the Paxton/McCullogh supercharger, which was offered as an option on later production cars. In May 1965, this Shelby was sent to Bill Stroppe to be fitted with its distinctive 1965 Thunderbird tail lamp units while still in its term of research and development service, a fact supported by the minutes of a Shelby American meeting. Throughout its time at the factory, the specially equipped prototype was used by Shelby-American for publicity and show purposes as was done with a handful of the earliest examples. It is the only 1965 GT350 prototype to be equipped with a Paxton/McCulloch supercharger – a feature later offered by Shelby-American as an option for the GT350 range.
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