FYI Ford Forum
What bearings do I use for a 69 Mustang?
69 spindles have smaller axle on all except BOSS 302 and BOSS 429. 69 non-Boss spindles use A2 and A6 bearings. 70-73 spindles have larger diameter axle and use A12 and A13 bearings.
69 non-Boss spindles use smaller tie rod, same as 67-69 Mustang.
70 spindles use a larger tie rod that is a little larger than the 67-69 spindle, but smaller than the Granada spindle.
What hubs do I use on what spindles?
Hubs and rotors from 65-73 will fit either spindle as long as the bearings that fit the spindle axle are used. The OD of the bearings is the same for all years mentioned.
So, the 70-73 spindle has larger axle but the rollers in the bearings are actually smaller than the 65-69 bearing rollers.
Will your rear brakes work on the Torino (new style) bolt pattern?
Yes. The big bearing cobra rear brackets will work with the Torino (new style) bolt pattern using 3/8” mounting bolts and will also fit the older style large bearing 9” flanges using ½” bolts.
The brake gap needs to be 2.50”. That is measured from the outside of the housing flanges to the outside of the axle flange (where the rotor would fit, but not including the thickness of the rotor.