RWD-14b Czapla Wojska Lotnicze

While I know the Heron didn't use the Wright Whirlwind engine, I suspect that it's derived from it in some fashion. Therefore I thought I would like to replace the kit "chunk" of plastic with a Whirlwind as a stand-in while the PE hub cover will conceal most of the features of this enigmatic Polish radial 9 cylinder engine.