The distributor cap and rotor are a premium, hi performance brand, not AC Delco.
Tune-up Kit includes:
153044 1973-1981 Crank/Case Vent Filter I/S AC Base
153050 1975-1981 All Air Filter
273002 1975-1984 Distributor Cap and Rotor Kit
303009 1976-1984 Spark Plug
303093 1974-1988 PCV Valve
303166 1978-1982 HEI Spark Plug Wire
353058 1976-1981 Q-Jet Carb Inlet Gas Filter
303368 1968-1991 Short Oil Filter-Spin On
Electrical components such as a tuneup kit are non-returnable parts.
Always refer to a factory service manual when diagnosing engine service problems. You can damage electrical components if the proper procedures are not followed. Be sure you are replacing the correct part.