Why? Because I want to know if there is any bad rap about them. I have had my 304 stainless on my MarkVIII for less than 3 years and just yesterday I blew a hole the size of a quarter in the very front primary on the passenger side where the bung is for the air injection. I put a magnet on the bung itself and it is stainless. The weld around the base of the stub that blew out seems to be slightly magnetic leading me to believe that 308 filler was not used to weld that bung in which would confirm that an idiot at Kooks put these headers together. Am I right in my assumptions? Now all of a sudden people are telling me that the flanges crack and the fittings fail on these headers. I don't get it. I thought Kooks was reputable. If they are not, why does Bill continue to sell these crappy headers? Someone inspire me.