What is considered an A-body on a muscle car?

An A-body is a compact car platform that was produced by General Motors from 1964 to 1981. It was used for a variety of models, including the Chevrolet Chevelle, Pontiac GTO, Oldsmobile Cutlass, and Buick Skylark. A-body cars are characterized by their relatively small size and light weight, which made them ideal for muscle cars. Some of the most famous muscle cars of all time, such as the Chevrolet Camaro and Pontiac Firebird, were built on the A-body platform.