1980 280zx rear control arm

An early 280zx rear control arm, but note the single thick disc brake mounts flange welded directly to control arm and 4 bolt halfshaft flange isn't as deep as the Maxima setup I've been running on my car. It appears the two setups are NOT exactly interchangeable, though they use the same brake disc and caliper, same control arm bushings and 1/2 shafts. Shock mount stud is also angled just a tad differently. Who knew?