One New NAPA Echlin #RR191, 4 Cylinder Distributor Cap for 1.6L and 2.3L Engines, in the original box, is for: 

Chevette 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987.

Monza and Vega, 1975 thru 1977.

Oldsmobile Starfire, 1976 1977.

Pontiac Astre, 1975 thru 1977.

Pontiac Sunbird / 2000, 1976 1977.

Pontiac T1000, 1981 thru 1987.

Made in U. S.A.