JEGS 30556 Header-Back Dual 2-1/2" Exhaust Kit 1978-1988 Malibu, Monte Carlo, Regal, Grand Prix,... With... Aluminized Steel Note: Exhaust kit is designed for 1978-88 G-Body that was originally equipped with a SB-Chevy. Does not fit ANY Cutlass Supreme model. Designed for use with 555-640600 (TH350), 555-640601 (700R4) or 555-640603 (TH400) and header set 555-30060. Engine and transmission swaps may require some fitment of all...