The dry sump deletes the oil pan and replaces it with a plate that has a windage tray style design. Very shallow and with passages that '****' oil from the crankcase, the entire unit creates a vacuum in the motor. Without digging out the text books, the main advantage (besides PERFECT oiling at any G Load or vehicle angle) is that a vaccum is created in the crank case. This allows the pistons and the crank to operate in the void of any pressures during downstrokes and rotation, etc. The horsepower gains from this (although a by-product of the primary use) are about 40 at the wheels on a car with cam, heads, etc. We have not installed one on a car that is otherwise stock, so I am not sure if it would make the same gain or less. The ability to lower the engine like in the GTS-R may put a higher load on the U joint at the front of the driveshaft but I can't see how it would affect anything else. In an engine lowering scenario, the front of the motor is dropped more than the rear so that the bell housing still is above the frame rails. This makes the rear of the trans actually point slightly up. (making the drive shaft point down, maybe (?) causing additional wear on the U joint - but obviously good enough for LeMans...)