DC Sports 4-1 Ceramic Header for 99-00 SI, never used. I tried to put it on my GSR Civic cause multiple people here said it would fit and it didn't. Only thing wrong is that I cut off one of the holes on the bracket because I thought it hitting on my oil pan and would then clear and fit. Nope. This does not affect the performance or stability of the header in any way. I'm asking $275 shipped for it. Let me know.