These 1/72 scale Fist of War, Modelcollect kits are great for experimenting and enhancing. The E-75 is a basic King Tiger. Length and link track, are OK, if you are careful. Since there was no turret for the extra links, I made frontal amor out of them.
The 128mm Gun was more detailed, but needed some enhancement. I created the walk around structure from evergreen strips and shapes and some screen. I then use my spare parts boxes to create the elevated rotation system. I also added some bits of brass tube to the barrel.