The post above has a link to Malossi Usa On Line. Your scoot should have 8.5gr rollers if it is still stock. If you have a de-restricted cdi then the 6.5-7gr will give you more rpms, and a quicker et to top end. If you go w/ a kit/pipe 5.5gr may be better. Shop around, and check some other forums for advice on the parts you may want. It will all depend on what you want to use the scoot for. A strong daily driver is my priority. I spent a few extra $'s on Malossi because as shaka stated they are the brand EVERYONE else compares to. Malossi also makes a very strong jug kit in a mild race set up for your scoot(2 ring=mild race) If you wanted to go full race (1 ring+full port timing) I would also suggest a COMPLETE rebuild of the engine cases. That would get you into the wheelie riding/always maintaining/always rebuilding zone...Shaka, Music Please! Another thought would be to follow Sidthesloth's posts, and think about his kit! He saved a few bucks on an 83cc kit that looks like it will be a "monster" when it is tuned. As you follow you will see the extra effort that has to be put into tuning it though. If you are good w/ your hands, and have access to some decent tools, sid has shown the steps needed to get a Lesser brand into running order. It all depends on what you can do or want to do. Keep posting tho as it is always interesting to see how a new set up comes together.