I have the Operation Unthinkable boxed set containing the American and Soviet tanks. The GF9 Operation Unthinkable boxed set, the American versus Soviet, contains 21 tanks. Five of these are the ISU-130.
The ISU-130, is a tank destroyer based on the IS-2 chassis armed with an 130mm S-26 gun.
This is the GF9 finished model.
This is the track sprue.
The kit also allows you to build the ISU-122 and ISU-152 variants as well. As there are five kits I think I will mix and match the different variants.
Firstly I went with the ISU-130. The kit was relatively easy to construct.
The next step will be a white undercoat.