Welcome to MF bro. I staggered my 08 GT two years ago and love the new look. I went thru a sponsor of the site "Cruizin Concepts". They were great, the guys gave me a really good deal (tires and wheels). I went with the stealth black godspeed omegas. Really gave my car an aggressive look that I like. I'm sure there are other threads you can look at on here to. Good luck man. Oh and post some pics when you find what you're lookin for.
American Muscle deep dish black bullits FTW! Perfect style for the S197.
Mine are 18x10 3" lip -rear/18x9 2" lip front. You can get non-deep dish for the front too if you prefer that style.
Very affordable too, but WON'T clear big brake kits in front.