Panzerjaeger-Triebwagen 50 (Compatible with Lego)

This is a german "Panzerjaeger-Triebwagen" from WWII and a kind of weird project. Lacking any modell railroad i decided to build something that runs on the Lego tracks. At ebay i got a flatbed railroad car and constructed the historic "Panzerzug" to match. I have no clue what scale it is but 2 Lego mini figures fit (barely) inside it. The hull consists of two identically and rotationally symmetric parts plus the top of the cabin. Originally i planned to glue the main parts together, but with the cabin roof on top it fits and holds quite firm and nicely. Printed with a 0.5mm nozzle on my OrdBot with something like 35 degree support the bridging was challenging but worked quite well. I think its possible even without support. The little PzIV turrets demanded some testing before they fit and turned the way i wanted it. It depends on shrinking plastic and calibration of the printer. The turrets need some 2.5mm sticks for the barrels. If you have real 200 by 200 mm