The most powerful tank in GDI arsenal, the Mammoth Tank, or Mammoth Mk. IV (Command and Conquer 4) in Lego.
"They won't touch us."
I only had small amount of Lego building block.
So I use 6 over 7 of Lego building block, almost all of the building block.
It took some time to build.
It head look bigger then the body, but it look just fine to me.