How many of us are there? Owners of Dodge based RV's?

I'm pretty sure it's a '74. "For what it's worth" (meaning I remember your cautionary note about coach year vs. chassis year), the coach plate lists date of manufacture as 7/74.

From the sounds of it, I think I'm going to have to get her fired up and moved to more level ground, then see if I can jack her up enough to get the wheel off. That's pretty much the only way I can get a good, clear look at everything.