Stanguellini built a Fiat-powered F3 car for the introduction of the formula in 1964, from appearances it was a neat, conventional spaceframe design with inboard front suspension. Unfortunately the Fiat engine was not competitive and this, coupled with a a lack of finance, meant that the car was never developed and it never progressed past the testing stage. This would be the last single-seater chassis to be built by Stanguellini.
It would seem therefore that the few Stangs that raced in F3 were converted F Junior models.
There were further rumours in 1970 of a new car to be raced the following year in the new 1600cc F3, interestingly it was said to be powered by a Ferrari Dino based engine but sadly it seems to have been just a rumour.
1966 Remigio Cianfriglia, Luciano Dal Ben.