I doubt any mods. IF anything, I would have to here it, would be axle back exhaust if I didn't feel the sound was a deep enough growl.

But like Paladin said, some states frown on that stuff, and living in CA, I think we are the toughest. But if the engineers did it right, like they did with the Mustang, the exhaust is pretty well engineered for stock and really the only time people make a good gain is when they change to long tubes.

As far as suspension, that is another thing I would have to wait and see if it would be worth it. I don't lower my cars, so the only thing for me would be the shocks/struts.