Alright Ben, found the shop who I was thinking of...
It's called Vaughn Machine or Eric Vaughn Machine and they are down in Monrovia, CA which I believe is near Riverside kind of.
Contact number: 626-358-6413
If I remember right it is right around $600 to widen the fronts to 20x11 and another $100 for the adapter you need to run them. Just use your rears for the front and you'll be golden.
2010 Camaro SS2 L99 Aircharger, Straightpiped, DT long tubes, Dyno tune by Cal Speed
384 HP & 392 Ft/Lbs. 13.203 @ 107.13 mph at Camaro5FestII