I'm not sure what box is being used - things changes a lot since the project started. The first engine was a lotus v8 twin turbo, but that was just too long, I think the current plan is with the 355 engine and box. Last i heard back in early 2010 was that the whole rear cradle had been chopped off and a new one made & it was hoped to get the engine fitted in 2010, but I havent had any updates since then....