216 did fight in the east but only during and after Kursk with series one Brummbar.
My advice for a series three, stick to Italy and Normandy with 216 or 217, I can't remember which options you get in the kit but I'm sure both are catered for.
For your information the Dragon kit is excellent, I have thirteen of them in various guises but stay away from the series two with zimmerit, this kit
http://www.amazon.co.uk/Dragon-Sd-Kfz-Stu-Pz-Brummbar-Zimmerit/dp/B003UOO2XE/ref=sr_1_7?s=kids&ie=UTF8&qid=1321809080&sr=1-7
It has an incorrect roof as well as other incorrect details, the kit is very good but if you don't know how to correct it to an accurate re-worked series one it will never be right regardless of how many incorrect reviews are written about it.
Good luck with your build, its my favorate vehicle.
Dean