INTEGRALE VESTITO CHANNEL - The first Evoluzione cars were built at the end of 1991 and through 1992. These were to be the final homologation cars for the Lancia Rally Team; the Catalytic Evoluzione II (below) was never rallied by the factory. In order to improve the handling, the Evoluzione I had a wider track front and rear than earlier Deltas.[1] In order to enclose this track in the bodywork, the wide arches were extended even further and in the process also became more rounded. The wings were now made in a single pressing, whereas previously they had been fabricated. The front strut top mounts were also raised in height in the quest for more grip: this then necessitated a front strut brace to control the forces thus generated. External changes included: new grilles in the front bumper to improve the air intake for engine compartment cooling; a redesigned bonnet (hood) with new lateral air slats to further assist underbonnet ventilation; an adjustable roof spoiler above the tailgate to assist in competition and to emphasise the cars sporty lines; new five-bolt (stud) wheels derived from the rally cars (stronger than the previous design); and finally, the rear of the car was changed with only one exhaust pipe now showing.