all 1992-1995 Civic Si and all EX coupe models came with the D16Z6 motor. if you're asking because you're thinking about buying either one, get the Si cuz it has a moon roof and you get rear disc brakes. The EX coupe comes with the moonroof as well but they have drum brakes in the back. i think it was pretty stupid for Honda to dick the coupes like that but whatever, i'm pretty happy with my coupe.