 The Z28 models included a stripe package that was not deletable and featured the LM1 a V8 with a four-barrel Quadrajet carburetor that produced and of torque coupled to either a 4-speed manual or a TH-350 3-speed automatic.Another first for 1978 was T-Tops, although they were a regular production option on the 1977 Pontiac Firebird and were introduced on the 1976 Pontiac Trans Am 10th Anniversary Limited Edition.The biggest changes for 1979 were the introduction of the luxury-oriented Berlinetta model, replacing the Type LT, and a restyled instrument panel with a much flatter appearance than the previous wraparound design (although the gauges themselves remained in the same places as before).