John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum

firstly, i'm an electronics idiot. 
some other questions will be posted in the newbie forum, but this pertains to owning a VS.

i'm eyeing a POPEYE right now, but i'm under the impression you can rotate games in & out.
so, this is only possible after a VS UNISYSTEM CONVERSION?

this particular cabinet has not had it done, so what am i in for?
PLEASE SPEAK SLOWLY AND LIST SPECIFICS!! ???
if parts aren't fairly easy to come by, just tell me to forget it and wait for a RED TENT or converted upright.
i'm just excited to finally get started in the hobby.

[i plan to have about 15-20 dedicated arcades, a few pins, and a huge rat-hole of extra parts]
[current machines:  ENDURO RACER, ...and that's it.]