Well I guess it's on!
Here are the blueprints. There not huge, but they are clear.
BIG NOTE: The blueprints here are for the...
Panzerkampfwagen II Ausf L
The Panzer in the image I posted was the...
Panzerkampfwagen II Ausf F
There is a slight difference! The main barrel on the Ausf L is in the center of the turret, where as the Ausf F's is offset to the side. Nothing too major. There are (or I can't find) any Blueprints of the Ausf F. So you should have no problem relocating the barrel, or you may decide you prefer it in the middle
Here are some links to images of the Panzer:
If you decide to go with a different Tank... let me know!
"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
[long pause] "Friend!!"