Litch,
the only modification required is to slightly change the position of the battery.
You've got to move it a little to the back.
Might be worth it, for an extra liter of fuel.
The fenders as seen above are the German / Swisse / UK style.
They look like German WWII helmets.
I fancy them myself.
Others are the Belgian / Japan / French version and the Mighty Dax USA version.
The double centerstand was only used in the UK and Japan.