Its a D16Z5 not a ZC, you just don´t have that engine over there, but in europe its standard ind every CRX, ohh by the way we also have the B16A with 150 hp, as stock enigine here in denmark and the rest of europe.
And here is the ZC engine, you can se there is many diffrens between the two engines, this engine is only built in the 1986-87 crx and not the new crx ED9 1988-91