I am sure it's the one in front, based on some of the other photos. I could always just cut them off unless there would be some benefit to running that setup on a street car... :)
debatable...that year B body is a little wider and the spring pads are off by a half an inch per spring
they "should" be cut and rewelded, but plenty of people run them as they are
this rear end is pretty popular because it brings the rear wheels a little further out (without cutting the tubes)