Are your wheels stock? The Brembo wheels are the only 19X9s on the car. The other 19" wheels are narrower. However, you need at least a 10" wheel for 305 radials, especially with that short a sidewall. Even a 10" wheel is asking for an inch of stick out on each side from the tire.
Honestly, best bet is try to pick up some Drag stars or similar used, 15X8 if you don't want to relo the rear swaybar, 15X10 if you do. Tons of tire choice there for the perfect setup.