70' or 69' front spindles? how do you tell them apart

[FIRE14142002]

I've got a 70 sportsroof and am needing to upgrade to front disc. I don't know for sure that I have 70 spindles or if po's replaced with 69's. How can I tell them apart? Most all kits are available for 67-69 then skip 70 and pick back up with 71-73. I will not go to the junkyard and do som mad scientist swap so don't even mention that.

 

[bnickel]

the 70's use a different wheel bearing than 69's that is one way you can tell, also you could check the casting number on the spindle itself. 70 will have a D0xxxx casting number and the 69 will have a C9xxxx number