its gotta be easier than that.
try posting on a sportclassic page and ask them how they did theirs.
while youre their get me there spoked wheels.
There is a whole thread of people who have done it to the sport clasics. They only use the wheel spacers stock 999 caliper bracket and rotors from the 999 wheels.
There are lighter wheels out there but judging by taking the front wheel of my monster and the front wheel off my 848 that uses the same wheel as a 999, the 999 wheel is much lighter then the 3 spoke.