There will be , metal/rubber tracks , sprockets drilled out,new front idler tension system, voyager will have a few brass set??. And there are others. Tell you what if Mr Tamiya wants to send a full rc to Canada( Brogfelt) I will build it and give a full non objective review. No strings attached. Lol.here is the selling point for me. I want to hear the full range of sound for the turbine engine. You have the model built mate can you give us the sound. Sorry should have said Tamiya, tiger 1, king tiger, Sherman modified m4a3e8, Pershing and
js-2, for now