We got the plans out of a cub scout activity book. It wasn't all that comlicated to build. Ethan did most of the wrenching and drilling, I the cutting. We bought the wheels at the Habitat for Humanity store in Grass Valley. They have a lot of cool stuff there. The nuts, bolts and lag screws came from good old Sierra Hardware. Cool stuff there, too. The wood came from the back yard stash. An $8.00 go-cart! Watch out Mario!