Check your warranty, it's different from manufacturer to manufacturer. I'm pretty sure that any modifications you make will void the whole thing. Actually, you'd be surprised at how the dealers handle warranty questions like that though - the warranty is completely administered by Honda itself. There is no cost incurred by the dealer, in fact, they bill Honda (which is why you'll see costs inflated on warranty bills sometimes). They charged Honda something like $800 to turn my rotors and fix my sunroof. Jeesh.
Anyway, sweet ride - it's a little low for my taste, especially with those wheels (are those 18's?), but it does look smooth.