Maybe someone who has more knowledge can solve this slight discrepancy. In the end, it's going to look very much like what you have now, as far as your stance. And by the way, I love those wheels you are looking at in the other thread! As you know, it's hard to find some you really like, so no matter whether the backspacing is 3.75 or 4" (and a thought just occurred, you could call the manufacturer and ask), you probably don't want to keep looking for wheels! You'll go crazy. I did!