yeah, honestly... look at this...it's an OBX header for a 95-99 Maxima...look at how the collector for one of the cylinder banks connects to the downpipe...a 90-degree weld?!?? WTF? yeah, that's good for smooth air flow



but yeah, I've heard a lot of good things about DC sports headers...the one and only bad thing that I've ever heard about them is that the ceramic coated ones tend to lost their finish after a short while, but that's only a cosmetic thing...