The Tuff wheel, rimblow, 68-70 A/B-body and the 72-74 E-body wheels all have a satin chrome finish that will clean up well with #0000 steel wool as long as the rust is minimal. If it's bubbling or pitted, it's too late. After cleaning with the steel wool, use a good metal polish like Wenol or Simi-chrome and apply by hand to protect it from the elements. Never use a power buffer or any type of power tool on the spokes. It will make them too shiney.
Dave