I'm probably gonna miss some here. I'm sure everyone else can fill in the gaps or correct my mistakes.
GM A-bodies (evolved into G-bodies during the 70's):
64-77-
Chevy-Chevelle/Malibu/SS/Laguna; Elcamino/SS and Monte Carlo/SS
Buick-Skylark/Special/GS-350/GS-400/GSX/Regal
Olds-Cutlass/F-85/Supreme/442/Hurst
Pontiac-Tempest/Lemans/GTO (74 GTO is a Ventura X-body); 69-77 Grand Prix/SJ(G body); Can-Am/Grand AM
GM X-body (62-67);(68-74 are similar to 67-69 F-body platform) (75-79 are similar to 70-81 F-body platform)
Chevy-ChevyII/Nova/SS/Concourse
Buick-Apollo
Olds-Omega
Pontiac-Ventura/GTO(74)/Phoenix
GM G-body- (69 GP/70 Monte/70 Cutlass Supreme) were the first G-bodies because they were a 2 door car built on a longer A-body chassis....a "Personal Luxury" configuration.
78-87 (Only the Monte and Cutlass Classic RWD lasted until 88)
Chevy-Monte/SS/Elcamino/Malibu
Buick-Regal/T-type/Grand National/GNX
Olds-Cutlass Supreme/Salon/Brougham/442/Hurst
Pontiac-Grandprix/Aerocoupe 2+2
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