4.6l headers?
if that was to my reference, nothing in particular. other power modifications. many available, some work in groups, some are fine alone, some add a little power, some grouped together double it. headers help flow and increase power, but they won't do much if everything else is stock - can even end up worsening performance. stock manifolds are sufficient for a stock engine.
upgraded intake etc and high flow exhaust, etc - I'd personally at that point begin to consider short tube headers.
a built, ported engine with boost added and compression raised? you'll see a massive gain from hi-performance long tubes.
all depends how far in you want to go.
upgraded intake etc and high flow exhaust, etc - I'd personally at that point begin to consider short tube headers.
a built, ported engine with boost added and compression raised? you'll see a massive gain from hi-performance long tubes.
all depends how far in you want to go.





