Plymouth issued a notice about the wheels no longer being available on Sept 6, 1968 - more info at
http://www.hamtramck-historical.com/images/PIBs/1969/pib_3_page2.jpgFour days later on Sept 10, 1968, this letter was sent out -
http://www.hamtramck-historical.com/imag...209-10-1968.jpgA week later on Sept 17th, 1968, another notice was sent -
http://www.hamtramck-historical.com/imag...el%20recall.jpgOn December 13th, they were officially cancelled. More info at
http://www.hamtramck-historical.com/images/PIBs/1969/pib_8.jpgSPDs were never intended to be actual build dates, so I am sure there are early cars with the wheels from a few different SPDs.
