From what I've seen on some others the bump stop is on the rear side. So don't know why mine is wrong? I guess I'll just drill holes in the proper place to line it up with the spot on the frame it's supposed to hit. I guess I got one of those "rare" factory screw-ups!??! Or an A Arm off something else that fits?
Here's a pic from Wouter's post, see the bump stop on opposite (correct) side.