I had a 91 KDX200 and it was one of the best bikes I've owned. I put a FMF pipe and a Answer spark arrestor on it, I would recommend this to any KDX rider's out there, ( FMF pipe and any of the high end spark arrestor's like FMF, Pro Curcit, Acebis, Answer will do, the FMF seems to be the favorite) I never did do the reed's but that should be done esp. if you want bottom end. Like posted above get the suspension set up, very important and dont forget to have fun !! Change the handlebars too if the stock bars are still on the bike.