In support of my Monte Carlo Registry, this Monte Carlo section will only pertain to 1970 through 1972 Monte Carlos regardless of engine size.

1970 Monte Carlo body/chassis marriage. Note the dual white stripe tires.

It's amusing to talk with 1970-1972 Monte Carlo owners that do not consider their Monte Carlos as Chevelles. Same for Chevelle owners that tend to shun Monte Carlo owners saying Monte Carlos are not Chevelles. Strange, Chevrolet considers the Monte Carlo as just another body style/series of Chevelle.

Consider:

1 - Monte Carlos were built along side other Chevelles where applicable and were sequenced with other Chevelles.
2 - Driveline and many options were the same between the two.
3 - Often the 'argument' is made that the bodies are different; well, Concours station wagon bodies and El Camino bodies are different from Malibu sport coupes - does that exclude Concous station wagons and El Caminos from being Chevelles?
4 - The 1970-1972 Monte Carlo shares the same wheelbase as the Chevelle sedan (116.0-inches). Concours station wagons and El Caminos also have a 116.0-inch wheelbase as opposed to the Chevelle/Malibu sport coupe and Malibu convertible at 112.0-inches.

Mockup Monte Carlo on the right shows 1971 on the front plate.

1969 artist renderings of the 1972 Monte Carlo