The concept has already been carried out by the late Lutz Fellmuth from New Connection Models. Lutz was a well known military expert, as model-manufacturer way ahead of his time, my mentor in resin production and most of all he was my good and dear friend for over 20 years. (Kraut kits, Germany).
https://www.scalemates.com/kits/new-connection-models-nc35168-sdkfz-234-flakdrilling-conversion--682631
So if this expert has released this vehicle with New Connection Models, then I think you can say that there is a document somewhere where this vehicle is described. Perhaps a field conversion… 