Im Kat from Houston, Texas. Even though I do not own a G8 my fiance James owns a 2009 Hot White G8 GT. We absolutely love it.
He has flowmaster exhaust, gutted out cats, his own tune, and he did have his own custom C.A.I. He wants HID's... im getting them for him for Christmas.
I did a crap load of research today and finally figured out he needs H11- 6k hids!