Had a thought, what if we just got one of those belt driven, snail shaped superchargers and used it to help our little turbos do less work for more boost? Exactly the same as the magna guys do, except we have turbos, so its kind of like a compound turbo setup for us. Pros/cons? Some reason it wont work? If we run a bar across with a bearing on each side we could have it sitting on the intake side and there would be bugger all pipework that would need changing.