It took five years of active searching, two weeks waiting on a box from Australia, and a new old stock donor IDE cd-rom drive from a local computer recycler, but I finally have an M2 board up and running in my house. I haven't wired everything up to my PVM yet, but via supergun I was able to boot and test the board. My Framemeister was able to sync to the medium resolution signal after some manual adjustments of the sync value, and I used my homemade fight sticks coin and start buttons to load and launch the game from the main menu. If the PVM will handle the 24khz in, I'll leave the board as Hell Night. If not, I will convert it to an Evil Night ISO that is standard definition. Going in SCART to BNC to preserve sync for the guns. Step 2 is to wire up a stereo out harness from the JAMMA PCB so I can get away from mono audio off the JAMMA edge. (schematics don't list Evil Night as providing mono audio from the edge, but pins 10 / L are live for audio) The cd-rom drive I swapped in does have a 1/8th inch headphone out, so I might try to go 1/8th to RCA adapter and mix the audio down the line into my speakers. In the end (once I have more space) I am going to get everything into a cabinet with the appropriate guns (I have one handgun, need to get a second + the shotgun) and artwork and basically have a restored Evil Night cabinet. Now I just need a Total Vice board w/ the old bios so I can run Polystars and Total Vice, and I'll have access to all five M2 games that exist on the Konami side. Big thanks to HotD54me for filling in some gaps in my knowledge, and Timo Weirich for talking tech with me. If anyone ever needs a hand w/ this hardware, feel free to pm me. I've been compiling a metric crap ton of info on M2 during this, so if I can help in any way, just ask!