I just talked with greddy on the phone. The guy couldn't tell me why the pic showed the SI with that exhaust. He said it hasn't been made for the SI yet...so whatever that means.
He did say that they are shooting for the end of April to bring out the Greddy Evo2 muffler for the 2006 Civic SI.
And another piece of excellent news: Greddy says expect to see their Turbo Kit on the shelves around late August for the Si. He said no info would be released on power gains or anything until it was ready for purchase. Reasearch and development in Japan is still in progress.