Ok, today I took an Eswat in an Alien Syndrome cabinet in exchange for some repair work.
The board inside the cabinet is labeled Alien Syndrome but it is running Eswat (and some paperwork inside the cabinet had the instructions from Sega on installing the conversion onto the board).
I know the encryption has been broken on the System 16 stuff, so what exactly do I need to do to get this board running Alien Syndrome again. Is it just as simple as reburning all the roms unencrypted with alien syndrome ones and swapping in a new 68000 CPU or is it more involved than that?