There were also threads on this subject that went into the resistor values and how to connect them. There were two resistor options as I recall. I believe the time frame was around late '04 to mid "05.

Used to be that the search function would find what you need. Haven't tried it with the new forum format yet.

Another thought would be to go back to the previously discussed alternative speaker option. The M3 for center would most likely be your best bet. I mean; after all, the VPs are offered with the M3s, so why not an M3 with M22s?