if you get a USDM B20Z, the intake manifold *should* fit. With a JDM motor, it definitely will not. By "should" I mean i've seen a few sites that say it does, but I've never seen it in person or a photograph. If you remove the resonation chamber on the B20Z and block it off, the stock manifold will definitely fit. Otherwise, LS is the most cost effective option, and creates a pretty desirable powerband.

As for the other stuff, you'll need a clutch and flywheel, since most (if not all :thinking: CRVs are auto) also the stock CRV alternator wont fit right, so an LS one will do the trick. Aside from that, its all basic B-series swap stuff.