To choose the correct Sub-woofer Kit and Backbox Kit for your game click on your game name in the list to the left or look at the Compatibility Lists . On each “game specific” page is a link to the Internet Pinball Database where you can find information to confirm which model game you have. We update the Compatibility Lists as we get new data. If your game is not on the list please contact us by E-mail, phone or snail mail. Often we can provide suitable kits by having you answer just a few simple questions about your game.