1gen integra zc in a 90 crx ??

Okay... a work associate has an 87 teggy RS... I was checking it out at break time today and noticed the redline is 7k. I'm not that impressed with his particular ride, but I was looking at the 87s on cardomain and noticed the RS has a twin cam ZC. Is this a 1.6 like the JDM ZC people swap into their CRXs? I've always heard that the ZC will bolt right up to the Si tranny as well. I'm not quite certain about the plug and play ability of the harness though. It seems like a cheap option just in case.

it is a different version on the zc if it is even one. the usdm integras came with a D16A1. it does not bolt into a 88-91 civic/crx easily like the version of the zc your thinking of will.