The conversion is based on some Gear Krieg artwork. I used a cheap Armourfast Su-85 1/72 kit to start, the EKC is made of plastic-rod with additional plastic pieces to represent the outside magnetic projectors.
Gear Krieg Background:One application of Tesla technology was the EKC "electrokinetic cannon," a combined energy projectile weapon of great destructive potential. The Soviets based this weapon on schematics from reverse-engineered German "Thor's Hammer" artillery guns, applying the same principles they had used to shrink the Tesla ray.
The result was a rudimentary combat railgun small enough for common battlefield deployment. Firing large armour-piercing rounds at velocities far faster than normal cannon rounds, the electrokinetic cannon became the primary weapon of the Russians' new SU-series tank killers.