SRT, first fill out some of your profile. It will help people on here help you. Being that you are kinda new to the UAS, I think you would be wasteing your money to invest $10,000 in your first kart. Keep your eyes and ears open and you can pick up a nice kart, complete for less than $2500. Now you will have a kart that will be in the hunt and it will leave you some money to learn with. If you already have a kart, look around for a nice engine, jack shaft, and clutch package. Before you start thinking about twins, get one motor running on a track well. There is a whole lot to learn but if your lucky enough to be in a good area with some good sportsman racers, you will have a great time. Almost all the UAS guys I have raced with will go out of their way to help you in any way they can. We plan on getting out to the Pittsburgh area this year, if you get a chance, stop by and I can show you what we are doing. Good Luck Man, Steve Windle Sr.