The Monza 2+2 and Monza Towne Coupe competed with the Ford Mustang II and other sporty coupes.[2] General Motors' H-body variants, the Buick Skyhawk and Oldsmobile Starfire, were produced using the Monza 2+2's body with grille and trim variations and Buick's 3.8 liter V6 engine. The Pontiac Sunbird variant was introduced the following model year, eventually offered in both Monza body styles. The Monza nameplate originated in mid-1960 for the sport version of the Chevrolet Corvair.