I'm currently runnin a 4 into 1 header, not sure what brand, cost $35 from a yard. It has fairly long tubes, collects way down at the bottom and actually has decent bottom end and screams on top. Sounds good too.....but, I just picked up a used NWOR header off ebay for about $100 and it has a much thicker flange and looks to be better built. The thin flange one I'm runnin now leaks no matter how much you tighten it or how many gaskets you stack in there, loosens up regularly and has cracked in the past, but not for quite a while now. I had a Downey that came on a parts truck, but I traded it off like an idiot. As far as the TRD header, I hafta wonder if they actually make it themselves or slap their name on it like they do with some of their other items, and if so who makes it? Nate