this is very interesting actually....there must be someone working on this, if and when a turbo kit comes out it will shit on the superchargers...BUT i dont see this happening yet, just like the E46 M3 the turbo kits came later at the end of the cars production...i personally am hoping for a kit
i dont know why an aluminum block wouldnt be turbo friendly? the N52 and N54 are both aluminum/magnesium so...i think ill contact HPF myself and find out