Steel Wheel ID

but I believe they are newer than '66 because of the additional holes in the bolt circle.

I'm not sure what you mean by this...I'm not an expert on the stampings, but that sure looks to me like it could have come off a 66 Satellite, in which case they would likely be 14x5-1/2?? I'll see what I can find.... they do look like they take the big poverty caps, so 80`s mopars would be out.