I'd say go with the Focuz header... have one on my B13 GA16DE and had no fitment issues (just barely makes it by the alternator). For $140 it was a steal... non-ceramic (it's stainless steel) and doesn't come with the piece to replace the short pipe in front of the cat, but no big whoop. Other header choices include the Pacesetter (find old posts, you'll see why people say NOT to buy one), OBX, and Hotshot. Hotshot is the best header for this motor, but will cost you the most.