Hey all i have been reading alot about sprocket changes people have done and was wondering if it would be right for me. Currently, the fastest my Z has ever gotten (downhill with tailwind) was 64. And I'm a pretty light dude at 125 pounds. It has never hit rev limiter at 4th gear because it just doesnt have the grunt to get there, and getting from 56-61 takes forever. So i was thinking about going down a tooth in the front to give it some more push. I realize this will decrease top speed, but with how it is now, I never even get all the way to redline anyways because of the lack of torque. In a perfect world, I was hoping this sprocket change would get me to about the same speeds I'm getting now or maybe slightly lower, just at a higher rpm but with the more fun in the low/mid range that comes with the torque. Will it completely kill my top speed? I'm not sure how drastic the sprocket changes are. I also read that it will screw with the speedometer, but I thought that the speedometer read from wheel rotation not sprocket? even if it does, would it make the speedo reading more accurate? or worse?