I live in the western suburbs of Chicago. Suggest that you start by contacting these Chicago area kart shops, L.A.D Specialties at http://www.ladspec.com/ or Viking at http://www.vikingkartingproducts.com/. Dave Larson had a kart shipping service but could not find a web site. I can PM you his phone number if you wish to contact him.
LAD Specialties customer / tony kart / rotax / kt100