8,8 cm Flak 37 on StuG IV Chassis

I will try to rebuild the vehicle shown on the foto on Pilsen Airfield. First I planned to use the dragon kit 6829 but I realized that this kit does not fit to the vehicle on Pilsen Airfield. So I have to build it out of three different kits. I will use a late Dragon StuG IV for the chassis, the Interior of a Trumpeter Bergepanzer IV and a Dragon Flak 37 on Behelfslafette.