Folowing this treat with great interest, I am still really interested to put my hands on that G56 upgrade, but how about the homologation (Tüv or similar) does it come with homologation papers?
I doubt it Smaug - we just bolt things on over here and as long as it is broadly legal in terms of fitment and noise, it will be OK. I'm sure the G56 guys will advise, but suspect that someone helpful like Hamburg Morgan might look to get the necessary paperwork sorted if they were keen to become a 'Williams' for Germany?!