Hm. The version I found a while back worked in Gens32 all the Gens forks I tried, but not Kega-- not sure if this would be sufficient for you or not...
Edit: Actually, it probably is the same version you've got; it seems to be the only one I've seen floating around, with the file name "g_kof99". Wish I knew how to get rid of the copy protection to make it runnable on real hardware, but at least it runs in one mainstream emulator, anyway.