I'm thinking of grabbing a Trophy Hunting Bear and Moose machine. I want to over time buy some more pcb's like maybe a House of the Dead or Police Trainer. Is this a situation where I swap a couple cables onto the other board, or is it more complex? Are the guns, or the way they work standard? I know most other games use a pistol, where this is a shotgun, is it just the housing that is different? Also, does anyone know if $900 for the Trophy Hunting game, mint with a bill validator (is that what you call the dollar bill thingy?) and everything needed to convert to Wing Shooting Championship (marquee, eproms, sideart) is a reasonable deal?