I am looking to replace the 32 tooth drive pulley with a 30 tooth as so many of you have suggested in other threads. My concern is top end speed, or lack of. I have installed pipes,intake,P.C. - V and Andrews cams. low and mid range is no problem it's cruising speed and hills that I have problems. It has a 5 speed and I find myself downshifting. Has anyone tried a 31 tooth. I was told that a 30 tooth can decrease top end by as much as 10 mph. My top end speed now is 87 mph so losing 10 would hurt. Any input sure would be appreciated.