amphibious panzer iii and panzer iv

At the request of hetzer73, here are the amphibious panzers. They include:
Panzer III J (L/42 and L/60)
Panzer IV F (L/24)
Panzer IV G (L/48)

Modifications included adding floats in the front and rear. I also added TinkerCad cubes to the sides to simulate more pontoons.
In the case of the Panzer III, I had to leave the middle area with some sort of connector between the floats so it wouldn't look so empty.