Our W5 TTI headers were probably the BEST out of the box headers we've ever had... bar none! (some results may vary). We've also had the Hedman Hustlers for our iron head 360 (see Pitts comment about the Milodon oil pan, had to change two tubes for fitment).

Currently run custom set of headers patterned after our Hustlers. One of the better $1400 investments on the car (W8.... not ordering those from Jegs/Summit).