This is a pre-'87 Camaro/Firebird TPI system. The pre-'87 systems were only used two years making them harder to find. They are desirable because they fit the earlier style heads which makes this a perfect system for people with older engines. This kit includes the intake, runners, fuel rail w/19lb injectors, plenum, distributor, harness w/relays, and ECM. This is a mass airflow system but the MAF sensor is not included. Everything included is in excellent working condition but it wouldn't be a bad idea to replace the injectors. The harness is in very good condition with no missing connectors. This is a perfect system for somebody looking to convert to a TPI.