Monzas proved so popular that General Motors used the name for a Corvair-based concept car in 1962. Unlike production Monzas, the Monza GT show car had the motor mounted ahead of the rear axle, making it a mid-engine vehicle.
The Wikipedia entry for the Monza GT is here. A General Motors Web page devoted to the car is here. Wikipedia claims the GT was displayed at the New York Auto Show in 1963, but the GM page says it was 1962. I mention this because I was able to see the Monza GT at a New York Auto Show since I was stationed in the army within striking distance of New York City both years. What I don't remember is which year I saw the car.
Credit for styling the Monza GT is given to Tony Lapine and Larry Shinoda.
When I viewed it, I was excited by the sculpting of its front end and fenders as well as the fastback roof line. I still like the design even though I'm more amused by the way it combines some practical engineering with plenty of jazzy show-car features. In theory, it could have become a production car. But making it street-legal and ergonomically practical would have neutered many of its design features, destroying its looks.