73 E body front disc brakes conversion on A body. Where did I mess up?

I sense a misunderstanding here.
and I don't know when or where it started.
The LBJ only fits on one side of the car, and the steering arm is always angled away from the plane of the rotor. That is not a point of contention.
>That recess is just there so that you can run the same length of bolt in each hole. But since it always faces inboard, it is never a problem; and
> So far, I fail to see how bolting the OTHER spindle to it, can be a problem.

OOPS Treed by the Professor