Edelbrock Manifold And Carb Kit Performer Eps Small Block Chevrolet 1957-1986 Natural FinishEdelbrock Performer Nitrous Kit #70216 is a dry system for use with Chrysler 5. 7L and 6. 1L HEMI sedans. It is capable of 40 80 horsepower increase. Performer EFI Dry Nitrous Systems supply nitrous directly into the intake stream. This Part Fits: Year Make Model Submodel 1980 1985 Avanti II Base 1985 Avanti II GT 1980 Buick Century Base 1980 Buick Century Estate 1980 Buick Century Limited 1980 Buick Regal Base 1980 Buick Regal Limited 1980 1982