Interior for a Märklin H0 coach wagon

This is an interior for Märklin coach wagons which were not delivered with interior (like the "Silberlingen" 4042 and 4043) .
The original interior is not sold separately and as there are no 3d-designs for this (yet), I decided to measure the original interior and re-design it in Blender.
The original interior is created as a "one-piece" part. However, wagons without interior have a metal partition in the middle, so you have to print it in 2 parts anyhow (or remove the metal partition, but tha