Maybe you just mixed them up or its a typo, but if you want to pass emissions you would want a catted downpipe. I am in SC a lot of weekends but I do not know the area well enough to tell you of any shops that would let a catless exhaust go. I would go with high flow catted downpipe if you have the extra $$. Saves you the hassle and smell. I think catless DP's have very minimal difference in HP anyway from what I have learned on these forums. I am planning to go Stage 2 on my STi whenever I get the money. I plan on getting a Helix catted DP. They run around $330 shipped!!