Installs using the stock mounting points and has a good fit/finish. Of course, you cannot use the stock sigs (not a problem for me as I hate the look of those giant turns on the tail).
And if you feel like making your own, this is what I put on my '05 when I had it. Plate mounting kit with lights was like $25 and I made my own mounting bracket out of about $0.75 worth of L brackets.