Agreed, but …
Miniart already have the MG 151 as a separate kit so they simply loaded the sprues in one box and updated the instructions.
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).
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… 
Just a quick thought (so I hope someone at Miniart reads this); It would be great if Miniart will manufacture the Sd.Kfz. 234-3 below in scale 1:35, so that we can quickly forget about the Dragon version:
They ARE getting my money.
Love the “second battle of Berlin June 1945”, which I’ve missed previously. Some great imagination there!
What a joy to see pictures of my New Connection + Dragon chassis build from many winters ago on this forum! I hat it sent from New Zealand to Austria for quite some spare. The new Miniart chassis would be a worthy basis for this drawing board version (as was the 234/Drilling indeed). As Miniart have proven to be plausibly creative with their reproduction of mysterious interiors, their offering of this version would certainly open my wallet!
Best regards,
Georg