Years ago (especially during the early & mod '60s), "promos"--1/25 scale plastic models built by companies like AMT and Jo-Han--would not only have fairly-detailed engraving of the frame, powertrain and chassis parts on their one-piece chassis pans, but they would also have (in the case of Ford's promos) promotional stuff like "The Look, The Power, The Feel Of The Fabulous Thunderbird!" engraved on a Galaxie 500 XL's frame rail, plus bits like "New Self-Adjusting Brakes" "2-year/24,000 Mile Powertrain Warranty"etc. on there too.
These wouldn't appear on subsequent kit versions of those cars...and MPC, iirc, didn't put them on the promos they started making in '65.
BTW: MUNI and BART are two SEPARATE transit systems...MUNI is just in the City (was originally the San Francisco Municipal railway), while BART runs in SF (as far south as the SFO airport), across the bay in the transbay tube, and in the East Bay from Richmond and Pittsburg to Hayward & Dublin (with an extension to San Jose in the works)
You'd need to take a look at the welds to see not only if they were done properly (if at all), but also see if they didn't fail in a brittle manner, as happens too often ] in cars with structural members made of high-strengh steels since the mid '70s. My father and I investigated lots of these crashes...what we found has some scary implications. (We did write a chapter about this for a legal text back in 97.)
Those Dodge-ified Mitsubishi Lancers flew out of the Dodge dealers that sold them back then...and, along with the Slant SIx-powered Dart, saved Dodge's bacon after the first oil shock hit in October of '73.