For those of you that cannot burn your own roms, these are the chips needed to upgrade your Space Shuttle pinball machine to the latest version, play a different version, or replace missing/damaged roms. Bally Williams Part #'s: SPACE SHUTTLE CPU GAME ROM U20: A-5343-10767 SPACE SHUTTLE CPU SOUND ROM U49: A-5343-10768 SPACE SHUTTLE SPEECH ROM U4: A-5343-10785 SPACE SHUTTLE SPEECH ROM U5: A-5343-10786 SPACE SHUTTLE SPEECH ROM U6: A-5343-10787 The default configuration is for sound roms to be burned on 2732 size roms. If your game has been configured differently, the sound roms can also be burned on 2532's instead. Please make sure you are ordering the correct roms for your machine, or you will need to change jumpers. Per Pinwiki.com, "Only the early Space Shuttles use 2532 EPROMs from the factory. Later Shuttles, Sorcerer and Comet use 2732 EPROMs.") Please see pinwiki section 4.2 on soundboards here for pictures: https://pinwiki.com/wiki/index.php?title=Williams_System_9_-_11#Sound_Boards