The install was not fun!! That being said, the DT headers are a quality built product, everything, including the air injection tubes lined right up.
The 4Runner feels a lighter when accelerating and around town I am up 1.25 mpg. I have yet to test the freeway mileage.
Thanks JasonB for setting me up, I'm hoping the Carb #'s will be available soon!
I agree it wasn't fun but driving with open collectors was a hoot!!!! I recorded the videos while my buddy drove up/down the road.