hi all....a knocking rattle has started in the rear left of my car and sounds like its behind the back seat somewhere i checked under the car and in the boot.. ive removed the lower part of the rear seat and have taken the rear head rests out and the bolts at the bottom holding the seat in out ...does anybody know the trick or how to remove the seat ....cheers Nick Also can you but superchargers that sit on top for these engines..not interested in an alternator style charger or turbos at this stage........ Nick from australia