Had a pair of the unplated center Cragar S/S. I don't think they were Sparklers. Here's a link to a 1971 Cragar catalog. At that point in time seems that the only thing avaialable was the chrome centers and Sparklers. Slightly off topic but looks like Cragar G/T's were history by 1971?
https://www.ebay.com/itm/Cragar-Whee...4AAOSwnklayVhN