grille with horizontal slats and two series of vents beneath it. The GTV was distinguished from the 1.6 version by twin chrome whiskers in the grille and GTV scripts carved in the ventilation vents on the C-pillar. In 1979, some minor revisions, including a revised engine with new camshaft profiles and a change to mechanical-and-vacuum ignition advance, saw the 2.0-litre redesignated the Alfetta GTV 2000L. Autodelta also introduced a limited edition 2.0-litre turbocharged model, named Turbodelta, of which 400 were made for FIA Group 4 homologation. This version used a KKK turbocharger which pushed power up to . The car also received a modified suspension layout. This was the first Italian petrol production car with a turbocharger. The styling of the GTV, while distinctive, can be seen to share many design features derived from the Montreal supercar, as translated down to a simpler and thus more marketable vehicle. Examples of this are the bonnet line, which while briefer, still has 'scallops' for the headlights, and the tail light clusters which resemble those of the Montreal. The door shape is similar, and in a sharing of parts, both vehicles employ the same door handles. GTV 2.0 and GTV6 In 1980, the GT received a restyling. Outside there were new one-piece tail lights, grey plastic bumpers, C-pillar vents and side skirts; all bright stainless steel save for the Alfa Romeo triangular grille was changed to matte-black trim. The 1.6-litre version was discontinued and the Alfetta GTV became known simply as Alfa Romeo GTV 2.0; the Alfetta name was dropped, but the two-litre coupé retained its type designation of 116.36 for left-hand drive and 116.37 for right-hand drive. 15-inch disc-shaped alloy wheels and Pirelli Cinturato CN36 tyres were now standard, as opposed to the earlier cars' 14-inch pressed steel or optional 14-inch alloy units. Later in the same year, the GTV 6 2.5, a version of the GTV with the SOHC V6 2.5 L engine from the Alfa Romeo Alfa 6 luxury saloon, was released. As a result, the hood received a bulge to clear the top of the intake and became its most pronounced feature. With Bosch L-Jetronic fuel injection instead of the six downdraught Dell'Orto carburettors in the early Alfa 6 installation, the V6 was much easier to start and retained its state of tune much better. The fuel injected engine was also able to meet the strict emissions standards introduced