Valve covers can easily be changed.. Some of these questions below may help you identify which car your B16A came out of. Also note 2nd gen B16A refers to both OBD1 and OBD2a/b B16A's, which have minor differences.

Where is your IAT Sensor located (Intake Air Temperature)?

Does your Intake Manifold have PGM-FI written on it?

Does your Throttle Body have a FITV on the bottom (Fast Idle Thermo Valve)?

Does your distributor have 1 or 2 plugs?