PRR Private Car Z74c 180 Interior for Rivarossi HW
Drop-in interior for Rivarossi's 1920's Heavyweight Observation Car, based on blueprints, http://prr.railfan.net/diagrams/PRRdiagrams.html?diag=priv_180_fp-46249.gif&sel=busi&sz=sm&fr= , of Pennsylvania Railroad's "Philadelphia" Z74c Private Car #180, complete with parlor with fireplace, two drawing rooms, two state rooms, a conference/dining room (which should have a chandelier), porter's quarters, kitchen, and wood stove.
The fireplace contains a passthrough to the bottom if you would like to put a flickering orange light in it (available from Evan's Designs https://evandesigns.com/products/flickering-led)