You'll also need this video pcb too, if you want to use your optical guns.Just for reference and to help out, Here is a picture of the JYU V222 I/O used for Ninja Assault if anyone is curious about what it looks like.
The board in the picture isnt working but after talking with AndyGeezer he said a while back that the bios here JYU2 may not be in MAME so I have
dumped the eprom (27C1001) and I have the bin file here if there is a place I can send it to help contribute to the list.
Let me know
