Have you noticed that on the boxart at least both the StuG IIIE and the StuG IIIG have the late drive sprocket with visible bolts. That would be a blessing since both the Revell late StuG IIIG and the Revell late Hummel have the (wrong) early sprocket.

What sprockets are included in the other early StuG kits from Trumpeter?
/Peter