I have a Super Neo 29, you know that the piece of metal all the controls are on is just a flat bit of metal that unbolts from the larger plastic frame.
I'm actually looking for an entire second plastic frame assembly. With the hinge removed, the assembly is held secure enough by the two locks, but can be quickly removed without tools. Idea is to have a second panel with steering wheel and possibly a shifter. Seems to me that a sit down cabinet with a large monitor would be great for driving games.
I considered just making the metal piece swappable, but haven't been able to conceive of anything that would hold it securely, but not make it a huge pain to swap. Undoing those eight or so nuts takes way too long to make it practical.
Sorry about the tangent, canberrasss... ^^;;
On the topic at hand, if money isn't a major concern, the suggestion of the WG (or Betson) / ArcadeVGA is spot on. Games would look much better than on a TV, plus you get clean standard monitor resolutions for use in Windows or with other emulators, etc. It's pretty much the ideal setup for a MAME cabinet.