I noticed Helio Bike ship to California and so they're shipping cost is very reasonable. Has anyone bought their stuff?
http://heliobikes.com/store/Engine-Kits/2-Stroke-Engine-Kits/66-80cc-Engine-Kit--p254.html
http://heliobikes.com/store/Engine-Kits/2-Stroke-Engine-Kits/66-80cc-Engine-Kit--p254.html