Yes it's a 1200 wing, :wave: 1500 wheel but a 1200 will work with 1500 rear end, if you drill out the 4 holes to fit bigger studs on 15 rear end, it will fit, according to thread. :builder:
The wheel change is not necessary but advantageous if your 12 wheel has a problem, a bearing issue comes to mind. Or in my case, looking to put a 1200 standard together, or if i ever need a replacement wheel, a taller wheel with double bearing's is a good choice. :salute: A few things like the washer, spacers, axil, & nut, are a plus, but brake caliper mount, & slight bit of cutting, off of it a 15 is a must. :moped: