[Water Warrior 2]

Easy job overall is correct. Take the tool kit out of the bike, it is under the drivers seat. You will then have access to all 3 nuts/bolts that hold the pillion on the rear. Remove pillion with tool kit. The metal plate you need and make is going to fit very nicely. Trust me on this. The only thing needing to be done to the plate after the fab shop cuts it to size is for them to bend the rear end ( 1.5 to 2.0 inches )of the plate down about 20 degrees. You will see what I mean when trying to fit a cardboard template on the bike. This will allow the plate to sit level and clear the curvature of the fender while still bolting in place nicely on the rear of the fender.
You will want to get a top box first so you know how large or small the fabbed plate should be to fit the top box mounting plate.
Yup it may sound daunting at first but if you can operated a ruler, tape measure, scissors, electric drill and a pencil you can do it no problem. A hammer and a punch are nice to have before trying to drill the metal plate.
The top box also makes a great backrest although you will probably not need the backrest pad that Lynda had. An armored jacket with a backpad is very comfy.