Cavalier finally offered the Z24 package with 2.8 liter V6, 4-speed manual transmission, 14-in. Goodyear Eagle GT tires, and electronic instrumentation.  “RS” series joined the 13-model Cavalier lineup that included three 4-door sedans, three 4-door wagons, three 2-door coupes, three 2-door hatchbacks and a convertible. &nbsp