I managed to score a used Tsukayu fairing from eBay for 200. Came with stereo and speakers in it, took a bit of screwing around to get to fit, mainly cos I'm a cheap bastard and made all my own brackets. Think with most aftermarket fairings you'll need to move your headlight forward and down, but there's people who make the necessary brackets.
I believe if you're going with a stereo fairing, you'll need to relocate your gauges onto the handlebars, but don't quote me on that! I again made my own brackets from a piece of aluminum bar stock and used a pair of kuryakyn clamps to mount to the bars. Again, there's people's who make brackets also.
Think I had $300 in to my fairing when all done, Woodys fairings are more expensive, but, much easier to work with and make fit...
but again, I'm a cheap bastard!!
