This is from the 1971 Dodge Models and prices salemans guide. No mention of limited availability based on other options for either steering wheel.
Oops, I mentioned options but not models
For the R/T, Challenger hard tops and convertibles the black wheel was not available, the wood grain wheel was standard.
For the Challenger Coupe ( Deputy ) the black wheel was standard and the wood grain wheel was not available.
My salesmans guide is a April 1, 1971 revision, so I am not sure if any earlier versions had different info?
T/Ake care,
Barry