rally wheel questions

HI all,

I still have questions about rally wheels and I need more help. I just received another set of trim rings but they just don't look right to me when they are on the car. Here is what I am seeing.

First of all there is a little lip at the deepest part of the trim ring, so it doesn't look like it goes all the way into the wheel. Is there supposed to be a lip? Is this a one year only thing? Was there one year only trim rings, rally wheels or center?

Second, One of the trim rings has 4 sets of pointed teeth for mounting, where the other three are what I am used to seeing with multiple tangs all the way around. The first mentioned actually fits decently, but I can get both kinds on the wheel.

Third, the face of the rings is stepped. Three of the rings have the first outer step as 1/4''. The next step towards center is 3/8''. The odd ball trim ring has it 3/8'' and 1/2''.

So what is correct here for a 72 scamp. From the pics above mine don't match up. Could these wheels or trim rings be from a later year mopar? Would a 72 scamp have polished or brushed finish trim rings? Sorry for all the questions. I'm learning.

thanks