James C (noemail@emailsux.com) wrote: > What I meant was photo 4D or Tangara is like taking photo of BL class,G > class, 81 class loco. > Only little difference from the exterior. There is little difference inside a G, BL or 81. There is a big difference inside a 4D compared to a Tangara. The 4D is smaller in all dimensions and has very different electrics. Cheers David