Billet Wheel adapter ?

"Hub-centric" is not necessary if you have all the lug nuts on, they are the right lug nuts for the wheels, and they are torqued correctly. We never worried about it in the '60s-'80s; if the wheel fit, it nearly always worked. The aftermarket manufactured all their wheels with the biggest hub bore to fit any car you might stick them on, and there was no such thing as "centering rings". Seemed to work great up until the last 20 years or so. I don't know what changed to start all this over-complicatitis.