I also installed the large B body disc brakes on my 69 Barracuda. I also bought and installed the Moog offset bushings. I installed them as per the instructions shown in your post. After taking the car to the alignment shop it could not be properly aligned. I had to remove the bushings and re-install them "180 degrees out" of the way it is shown in the instructions. It was really confusing putting them in basically "backwards" from the way the instructions show BUT it solved the problem and the alignment guy had no problem aligning the front end properly. I don't know if anyone else has run into this problem but I did!!
Treblig