I am a charter member of this forum since around 1998. I do not recall hearing about a Monaco/Dynasty Diplomat. I cannot find one in the various brochette years. I once owned a 1998 Diplomat. It was the 49th Dip built, first one with a booth dinette. Back then, the majority of the Allison Transmissions built went to the Humvees.
Chuck B, 2004 Windsor