Since the determining factor is which u-joint (does that then change the yoke?) the car was equipped with, is there a distinct visual or easily measurable difference between the two? It would be nice to have the parts on hand before you take it apart. I've seen the parts listed in other catalogs as well, again with the u-joint, not the date of manufacture, as the determining factor.
1st Car - 1966 Convertible 200 C4 Silver Frost / Red I've been riding in it for 50 years, driving it for 46. My parents owed me 200 bucks they stole from my paper route money but gave me the car instead.