i've been considering the same thing, and it seems it can be done, but you need an older model fairing. The older fairings don't wrap around the headlight like the current batwings do.
the fairings from the 90s install quickly using the 4 nuts that hold the detachable windshield. it is advisable to install a headlight rim extension to fill the gap around the headlight. these fairings can be had for about $200 on ebay. the windshield is adjustable and i have trimed the bottom off of mine several times to find the height that i can see over with little wind buffeting.