So..I'm puzzled. You have a block that's built for turbo now, or..you are getting one. What's the point of not going turbo? I mean, nitrous is the cheap (at first) way to get hp. It's definitely the worst. I guarantee you will have burned ring issues and/or you're going to bend, or drop valves. I've done too many nitrous set-ups. I've seen it done to the best motors. And please don't do high compression turbo. You're asking for trouble there. My GS-R (Stock pistons) blew after...5 months, or so. Good luck with your decision. Just make it the right one. You don't NEED a fast motor for the time being until you build the one you really want. you get what I'm saying? That's just addiction and not thinking right.