Kai

Any 88+ D-series trans, with the right flywheel and clutch.

If you want it to bolt into your car, you need a browntop ZC (1.6i-16 and overseas Si models) trans or a D16A1 (86-89 Integra) trans along with the axles from such cars.

jlicrx

what ZC are you getting? the ZC that bolts into and works with the 1g CRX (3g Civic) is the "brown top" JDM DOHC ZC from 86-87 JDM Integra (basically same as USDM 86-87 Integra) which uses the 86-89 Integra transmission, axles, knuckles/hubs, shift linkage and ECU - it has vacuum advance ignition which is compatible with the 1g CRX Si - most of the wiring plugs right in - there is also a "black top" JDM DOHC ZC from 88-89 Integra that is basically the same as the D16A1 from the USDM 88-89 Integra and has the electronic ignition advance - it will bolt into 1g CRX using 86-89 Integra transmission, etc., but requires considerable wiring - there is the "black top" JDM DOHC ZC from the 88-91 JDM Civic/CRX Si which bolts into the 2d gen CRX (4g Civic) and uses the 88-91 Civic/CRX L3 transmission - this engine is not the same as any other Honda engine, USDM or JDM, and will not bolt directly into 1g CRX (3g Civic) - there is the "black top" JDM DOHC ZC from various 92-up JDM cars which is similar to the "black top" for 88-91 models, but is OBD1 and has different front mount - will bolt to any 92-00 D-series CRX/Civic transmission - will not bolt directly into 1g CRX (3g Civic)
www.ZCspeed.com