I am lowering and installing a disc brake conversion kit on my '66 F100 and am having an issue with the bracket. It sits too close to the steering knuckle and I cannot bolt on the caliper. I ordered a disc brake conversion kit for a '66 that will use my existing spindle, but I'm wondering if a previous owner swapped out the spindle for a different year.

 

Here is the view of the other side with the bracket.

 

1965/67 F100 spindles are marked C5TA-3107-A / 1968/71 F100 spindles are marked C8TA-3107-D

If the number marked on the spindle is different than the above, post what it is.