Followup, one of life's great mysteries solved: The small white fan blade used for the left radiator and AC fan was was also used on (wait for it...) Maserati Quattroporte series 1 and Mexico. Maserati part 107 MA 56488.
Now of course, I am wondering what that "MA" means in the Italian numbering system...and why DeTomaso used "8" for the Goose...! Lee