Hubcap Experts: I need your help.

[68Stepper]

I've been searching for a long time and finally purchased the original white/red hubcaps on ebay to put on my 68.

When I got them and tried putting them on, they would not fit over my wheels?

Below is the measurements of the white/red hubcaps. As you can see, the diameter of them appears to be approximately 9 1/8 inches.

Did I mistakenly purchase C20 hubcaps?

I'd like to get those 70s dog dishes off my truck because I don't like how they look on it!

Thanks for the help!