This unique tank is the first full kit released by Resin Tech Models. It is a fully 3D printed model with everything you need in the box. I added a few detail items from the spares as seen in the photos. The model was finely printed with minimal support clean up. There is a slight print line texture on the hull and turret, but these areas were lightly wet sanded and covered with thinned putty to simulate the cast steel components. I was particularly impressed by the air intake screens and I hope RTM makes a future set for the KV tank family. The tracks are individual links and both sets were assembled in about an hour or so. The kit is engineered to allow easy placement of sculpted welds. I created these with Green Stuff epoxy putty. The tank was proposed with a 47mm gun, but this was an uncommon ammo size and I think they would have stuck with 45mm for supply reasons if it had gone to prototype or production.
Your improvements to the model make a difference too. 
