DOHC ZC right? I've only seen it swapped in a couple CRX's but i'm pretty sure it's identical to the D16a8 or whatever is is in the 1st gen integra.

Info i just found (applies to CRX mostly but still valuable info)....

1st gen DOHC ZC - brown valve cover - came in 86-87 JDM Integra - will bolt directly into 1st gen CRX Si and 3rd gen Civic Si - will not bolt directly into 2nd gen CRX or 4th gen Civic.

2nd gen DOHC ZC - black valve cover - came in 88-89 JDM Integra - will bolt directly into 1st gen CRX and 3rd gen Civic, same as brown valve cover, however, it uses electronic advance distributor like 88-89 USDM Integra D16A1 - 1st gen CRX Si and 3rd gen Civic Si have vacuum advance distributor, so, to use it on 1g CRX or 3g Civic, you will have to do a lot of wiring changes.

3rd gen DOHC ZC - black valve cover - came in 88-91 JDM CRX Si and Civic Si - bolts directly into 2nd gen CRX and 4th gen Civic.

4th gen DOHC ZC - black valve cover - came in several different models of JDM cars 92 & up - is OBD1 - has Cylinder Position Sensor inside the distributor and will bolt directly into 92-00 Civics