Well, I found out from a fellow Pantera owner (Brooke Pitt) that Utah law may change. It appears that H.B. 221 and H.B. 096 in Utah would allow for 40 year old cars to be considered "vintage" and not be required to get safety inspections nor emissions testing in the counties that require it. Registration for a 40-year-old "vintage" car would be a one-time fee of $45. Very interesting... I'll have to read the bill to see if it means that a special license plate will be required.
I understand other states have similar laws, but this is good news in Utah for the handful of us with Panteras (and all of the other classic cars) since 1968 and newer cars must pass emission testing respective of the build date.