I'm also assuming G60 mounts will be stronger than the 8v GTi mounts?
Not sure why the focus on G60 parts. Its an 8v so buy normal top mounts. The only reason the G60 top mount is different, and iirc is the same part from the 16v, is because the front of the G60 and 16v are heavier than the 8v because of the supercharger and 16v head respectively.
So really you just need the standard top mounts and not worry about G60 top mounts.