I have a set of rom chips for a UMK3 Board. I sold my Ultimate Mortal Kombat 3 board so I have no way to test these but I bought them in "working" condition on Ebay a few years back and never did anything with them. I bought them with the intention to get them flashed to regular Mortal Kombat 3 but never got around to it. I don't know how much they are worth so PM me with an offer if you are interested.