Demon 340 wheel size??

Did any 72 demons have the large bolt pattern?? If I want to exchange the axles for big bolt, I will need to pull them from an Abody 8.3/4 rear end vintage 73 year and up???

A 72 demon would not come from the factory with BBP...and no you can get axles from a 73 A body since mopar dropped the 8 3/4 rear end in 73 from the A bodies...73 and newer use a 8 1/4 rear and the axles do not interchange.