The Charlie Daniels Band released two versions of their 70’s country-rock barnburner. On the LP or FM version, as found on Million Mile Reflections and the 45 rpm single, Johnny calls the Devil a “son of a b**** “.
The clean version also known as the radio edit substituted the phrase with “son of a gun”. The two versions are identical in every other aspect.
Numerous Best of and Essential albums simply re-release the LP version. Fiddle Fire and Live from Iraq do contain cleaned-up versions, but these are remixes (or live) and not the original.
The original 1979 radio edit can be found on the 1990 album Columbia Country Classics, Vol. 3: Americana.