Stock oil system you say? Hmmm... as someone with quite a bit of FSAE experience, I would have to disagree that a stock system is going to be sufficient; even if the engine is mounted at the stock angle. Motorcycle engines are simply not designed for the amount of slosh seen in a car and at least needs a baffled pan. A quick google search yields a lot of solutions to this problem specifically for the busa engine. Some of the other universites in the competition came up with a 'quasi-dry sump' which somehow evacuated the oil out of the pan (probably using an electric stand alone pump) into a reservoir, but then plumbed the reservoir directly to the stock oil pump pick-up. This was a lower cost alternative to a full dry-sump system. Food for thought...