It bolts right in. You will need either the SOHC VTEC ecu, or an aftermarket vtec controller for the vtec. I hear its a solid motor, and easy to install if you dont wanna go ZC or B16a. Alot of people have gone to DOHC power, so you can find D16z6 motors laying around all over the place. Just shop around and you can find one. This motor bolts right up to your Si or DX tranny as long as its an 89 or older CRX.
JesseCrx