That model is needed for lifted trucks; it comes with adjustable end links. It’s the same sway bar, so it’s unnecessary if you’re riding at stock height. It’s nice that they offer an adjustable version for those who need one.You can.
Everyone seems to shy away from the 7883 though, and maybe it is overkill (?), but I'm really happy and it's not that big of a price difference.
Also, I'd prefer my truck be overkill