NoriBuilt off Eckhert has been doing some good work, they'll be doing the turbo upgrade on my MazdaSpeed6. I'm also getting my exhaust and test pipe from them. They make some nice IC's too...They're having a dyno day on June 19th with an awd dyno they're having installed so all types of toys are welcome. Whatever you go with on that G8 is going to end up sweet, I love those things.