The negotiations between the two companies were mediated by the Austrian engineer Rudolf Hruska, who had previously worked with Carlo Abarth at Cisitalia in 1949 and was a technical consultant at Simca in the early 1960s.

Pigozzi hoped that the collaboration with Abarth could make the Simca brand affirm itself in motor racing.

To create the aluminum bodywork, Carlo Abarth and Colucci relied on small local companies: from 1963 onwards entirely to Carrozzeria Sibona-Basano, before that to Beccaris, both from Turin.

Also mounted at the rear, the displacement was increased to 1.3 liters and the cylinder head was equipped with a twin-shaft distribution, with the adoption of two Weber 45DCOE double-barrel carburetors; thanks to these modifications it delivered 125 hp.

Jean Guichet took a victory at the Autumn Cup in Monza, where he won in the GT class.