my truck has bassani ceramic headers, K&N filter(stock air box)and underdrive pulleys. I dont know why but it just dont spin! I run about 14.8 with it.
Yes they have headers from the factory but there small just look on your truck where the header bolts to the head and you will see why everyone changes them
Good Kill JARHEAD!! New River or Lejune? Please e-mail me- I'd like to ask you some questions about Jacksonville. I left there in 1996. cplgunn@aol.com