it's not a "smoothie," per se. this has no hubcap, or slots of any kind. it's a smooth, flat wheel. it looks like basically like these:
well exactly like those if they make them. black with a machined lip. that would be dope.
in a truckin mag i saw an old c10 on a trailer with chrome ones. it looks so dope. i'll see if i can find it.
ok i found it: