rally wheel questions

Go to the bottom of the page in this link. Part #4483. The owner says they measure 2 1/4'' deep when measured on the table and 2 1/2 when measuring the curve.

The site also states that they fit 5.5'' and 6'' wheels, which adds to my confusion. Maybe they fit other cars as well? From what I'm hearing MOPAR only made 14 x 5.5'' wheels. Am I missing something?

http://markzpartz.com/trimrings.1.html

Do early Ramcharger rims have a 6" width or are they 15's?