@Robchally -- you can read about CM23T3C106250 here and about CH41T3C106997 here
I'll add one car to the list, CS23T3C106581 -- this one was owned by @73Coupe and also had a SBD of Aug. 15, 1972.
Thank you for posting it! Looks like your JB9 Newport is an early build. Beside the great color, CM23T3C106250 has a 440. Few options, but good ones :-)