I have a personal primacy in hellcades:
http://forums.arcade-museum.com/showthread.php?t=67859 but I did it a looooot of years ago and I can't find any picture now.
My monster was a cab with an amplifone monitor inside and a rorating CP

position 1: trackball for quantum...
position 2: 2 joy, several buttons (joys for black widows... and buttons in same position of Asteroids DX) and 1 spinner (MH)
Position 3: Star wars yoke
the 1st version had a ZVG and vectormame inside
2nd version had all original boards in a "rack" interchangeable with a universal interface called vernimultivector plug

aesthetically speaking... a good reason to puke without so much beer
