dd you have hit the nail on the head but i think the oz boys will have better info on the engines seeing the cars are being developed by kelly racing.i think it's not only nissan but also merc.S/thing to do with the engines and re-fueling.Hope they dont pull out cos they done well in such a short time.you can check out the write up -- just google nissan v8 racing fuel complaint. Anyway you know what they say ay ''IT'S HARD TO GET TO THE TOP BUT EVEN HARDER TO STAY THERE.