Thanks for the ideas, Morty! I found some of the old Rapid Transit literature that I'll print out in the next few days. The kid printed out the press releases from her favorite site (a.k.a Barry's Hamtramck Historical). Then she found photos from another website of official press release photos. She also found an article from an old newspaper that she pieced together. Her next thing is finding the magazine reviews from 1970.

“Working on cars teaches you patience... and every curse word imaginable.”

1970 Plymouth GTX -- A true gentleman's coupe, but a serious muscle machine.