I have a friend who is trying to sell a set of old school turbine wheels. They have been in storage for about a decade. They could use a trip to the glass bead booth, some polish and paint. Asking price is a reasonable $150 for the set, 15x7 with the large bolt pattern.
Another, definetly different wheel is late model Chrysler 300C wheels. I looked at a set of take offs at my local tire store that were very good looking on their own, have no idea how they would look on your Cuda. $400 for a set of four 18x7.5 with 5.5" back space and a 114.3 bolt pattern, which means they could fit without mods. However, the big caveat is that not all of these late model wheels have the same back space. Another set of 300C wheels I looked at were 6.5" of back space with the same 18x7.5 dimensions. So definetly measure them before plunking down cash.