15th Mar 2016, 13:38
OK the Buick Regal/Century, Olds Cutlass Supreme/Calais, Chevy Monte Carlo/Malibu, Pontiac Grans Prix/LeMans. These were all labeled "A" bodies from their downsize in 1978-1981. A lot of people will call these "G" bodies, but technically they are not. Then in 1982 - early 1988 the same platform was switched to the "G" body name, except the LeMans & Century, which were discontinued in rear drive form after '81 and the Malibu after '83. The "A" body platform switched to a totally new front drive car beginning in 1983 and included the Chevy Celebrity, Olds Ciera, Pontiac 6000, and Buick Century.
Look this info up and numerous sources will explain the same thing. Before this turns into another argument going around in circles of cars that don't exist such as a "G-body Buick Lucerne made from '79-'83 in very limited quantities" which somebody tried to claim on a different thread a while ago.
15th Mar 2016, 12:01
Apples to oranges. G and A bodies are GM; M bodies are Chrysler. This all started because 6:05 decided to bring up a 1970s Pontiac in a thread about 1980's Chryslers, whatever.