Lionel had 4 B-Units advertised with 'FatBoy" speakers, that were PWC with TMCC.
They specifically state "Discover the exciting realism of the breakthrough LEGACY RailSounds real-time “quilling” horn and laboring effects with these all-new LEGACY RailSounds B-units. Add LEGACY RailSounds features to your favorite Postwar Celebration Series F3 engine sets!".
However, there are some non-PWC AA sets that have the same specifications to the PWC ones.
My question is, can I use these "FatBoy" B-Units for non PWC as long as the technical specs are the same, despite it being a non "PWC" item?