 Forced to concentrate its remaining resources on development of fuel-efficient compact cars, Chrysler created a separate strategy from Ford and General Motors, adapting existing vehicle architecture for new model segments.For the 1979 model year, the success found by GM and the upcoming introduction of smaller full-size cars by Ford necessitated a response from Chrysler.Unable to commit resources to downsize its full-size C-platform chassis (redesigned in 1974), Chrysler was relegated to introducing the R-body vehicles, matching Ford and GM in exterior footprint.