Just wondering if anyone out there make turbo headers for a 5.4 4v?
GT500 is a 4V.What did you do for flanges? gt500 are different from 4v heads
That's my suggestion. They flow around 320 out of the box and have good springs and valves in em. Can't really go wrong. Took mine out of the box and bolted em on. Spun that motor past 7k with no issues too.Hmm. Guess i will keep looking for some GT heads in the mean time.