Which rim blow center cap is correct for a 1971 Challenger? There are a few reproductions available, but seem to cross over from '70-'71 interchangeably. There are two that say "Dodge", one with black lettering and one with embossed metal lettering. There is another with a plain black pad with 3 hex head bolts. Which would be the most correct for a '71 Challenger?

Thanks!