I did it, because I found on the forums more that it should be done, than it doesn't have to be done. It's really only about an extra 10 minutes work on each side, if the bolts come out easy enough.
Yes, Flipped with no ball joint spacer
Yes, Flipped and added a ball joint spacer
No, Aligned Just fine without
No, Have some alignment issues
I did it, because I found on the forums more that it should be done, than it doesn't have to be done. It's really only about an extra 10 minutes work on each side, if the bolts come out easy enough.