I've seen guys here use the hub ring.
There's one other potential wrinkle with these new wheels. Since the blanks are just regular 22.5" semi trailer wheels, they are actually 3/64" thicker hub flange than the GM ones. While positive in that they're rated for higher weight, it's a negative in that your lug studs might not be long enough. Another 'Bolter went this way, and wound up having custom lug studs made at a local shop. On my rig, the front ones are still usable however the rears will likely need some creativity in order to work. Modern rubber and safe rims are worth it, though.
