Hmmm...
The guy has 7 arcade cabinets. One is Battlezone...which is a definate NO GO (first off, I wouldn't convert a BZ cabinet out of respect, second, it's vector monitor wouldn't do me any good anyway). The other 6 are VS Excitebike, Heavy Barrel, Arkinoid, Kageki, 1942 and Victory Road.
They are in various stages of condition. I am going to go check them out next weekend (he is out of town this weekend)...