not the perfect example, but .....
Superbird RM23V0A171644 w/B30-SPD ("restored" in the '90s w/~60K miles on it)
based on the assigned VIN sequence it should have had a C01-SPD

all believed to be original to the car:

power steering box casting date 9299 = Monday 9/29/69
LH lower control arm stamped 301/921 = 301st day, Tuesday 10/28/69 (shift 2 line 1)
K-frame stamped 3229 1 = 322nd day, Tuesday 11/18/69 (shift 1)

car arrived at Clairpointe from Lynch Rd. Friday 11/28/69
car left Clairpointe Monday 12/1/69

Brennan Cook - SUPERBIRD pages

door sticker 12/69