N Scale NYCTA/MTA/SIRT R44/R46 subway/transit car 'A' unit body shell. Shell has operator's cab at one end. R44/R46 trains generally run in A-B-B-A sets. Shell is not designed to fit any particular mechanism but the KAto and Tomix drives are a good place to start. We will be offering a frame and trucks for building nonpowered models.