Black steelies and drag radial look?

I have Mopar Police Wheels on my '67 Notch. They are 15"x7".

Are all of the police wheels the same width/bolt pattern/backspacing?

My bolt pattern appears to be 4-1/2", is that correct?

Also, the backspacing appears to measure 4-1/2", is this typical?

Also, what size tires can I run on the front of my car on those wheels? Thanks!!!
Thank you!!!