i'm doing a mild gsr build in my integra. crower stage 2 cams, dual springs and retainers, adjustable cam gears, ferrea valves, port and polish, 3 angle valve job, b16 pr3 pistons in an ls bottom end, skunk2 intake manifold, 70mm throttle body and a password whale penis. along with a tune and a chip i will be happily surpassing 200hp. you can do a ton of stuff to a b series motor without going turbo. you won't end up with 600hp, but you will have a solid motor build from the inside out to handle 9,000 rpm easily and still push pump gas. i can only imagine what this kind of build would do in a civic. lots of fun im sure... hope that gives you some ideas.