4x4 rallies on a 66 c10

[66 GWN]

Hi everyone. Hoping to get some advice...

I have received "free" 80's 4x4 rallies for the truck.. as you can see by the pics they still need to be cleaned up a bit but will look much better than my current rims. Anyhow, I took 4 pics. One of the rims off the truck (front), one off the truck (back), one installed, and one close up of the rim to hub contact.

My questions / comments are....

1. Are these 4x4 rims ok for my truck?
2. The backs of the rims will not sit flush with the drum because it is "scalloped"? (second pic) is this ok?
3. When the rim is tightened the hub does not go beyond the rim so i cannot ensure good contact (pic 4).. is this ok?

Thanks
66GWN