i also not pretty sure, but the place i took this picture from ( web site ) the people also not sure whats is the engine, and the engine is use for. but now sence thio say its quad-turbo V8 monster then i think its the quad-turbo V8
i think it would be better if they filmed the Initial D movie in Japan and with japanese actors. and im sure japan has enough racers to pull off the parts well.