350 Rancher selectable 4×4

Okay so I just converted my 350 to 4×4 this past weekend. I hate the all time 4×4 though. I know about the drive shaft switch outs but I don’t like the way they look on the bike.
Does anyone know if swapping the front diff out of a rancher 400 and getting the handlebar switch would work? Ive compared the diffs of a 350 and 400 and the mounts are the exact same. But there’s three plugs on the 400 diff and I would only have one for the handle bar switch. Would the other two plugs matter if I left them unplugged?
Would this mod work?