If they are still available, the motorsports controllers and the appropriate calibration chips are available from Bilstein but, if the 11s are what you want, I'm going to guess that making an SRC change is not going to be worth almost 3 ths.
Nevertheless, you can get halfway there by removing the front actuators then manually turning the shock valves to full soft. The system will then set the rears about 60% then set a code which you can clear later.
Next, I'd disconnect one end of the front stabilizer bar, bolt on some drag radials and run the car on 2:1 or 3:1 100 unleaded race gas to pump gas. If you're at 12.73 now, you ought to get closer to the 11s doing the above.
As for tuners either Ron Zimmer or Marc Haibeck are good.