After I purchased the Revenge from Mars machine I started looking for the Star Wars Episode One upgrade kit. I found one in California for a reasonable price and bought it. The kit comes with the complete playfield, cabinet decals, roms, manual, and the mechanical shooter. Swapping playfields is fairly simple, just a little time consuming. Everytime you swap the playfield you have to upgrade the roms on the prism card via a serial cable. This takes approximately ten minutes assuming it doesn't fail, which it occasionally does. A tip I figured out is run the update software in highest priority to avoid serial errors. You can change program priority in the task manager.