Howard,
The Street Fighter II cabinet listed at the link looks to be the exact design as my Champion Edition cabinet, which does indeed have a metal 2 player "smaller" control panel. My cabinet is an Dynamo HS-2.
I acquired the retro-fit panel from a distributor. It is designed to fit an HS-5 cabinet to adapt it to 4 players and is indeed wooden. Now, I've don't particularly know which games, if any, were originally distributed in an HS-5, but from what I understand, they are very similar to the HS-2s. For that reason, I bought the panel in the hopes that it would fit my cabinet - the mounts are actually the same, and it would if I took a hacksaw to it, but I'm trying to sell it unused and unhurt instead
