HELP on identifying Shelby

[midwestshelby]

Looking for some assistance on identifying this 1966 Shelby and any more information the community could be provided

VIN: SFM6S1509

It has a Paxton Supercharger and I am curious and unable to find out if this came factory or if this was added on over the counter.

MANY THANKS

[Wedgeman]

Registry has no mention of a supercharger from factory or previous owners.

[gt350cs]

I believe there were only 11 factory supercharged cars in 1966 and all have been identified by VIN. 6S1509 is not one of these. Most likely installed by a previous owner.