[Leedom]

I read an article is Muscle Mustangs and Fast Fords a couple of months back and it dicsussed this very topic. They said that the headers have to be thought about as part of the whole engine build-up. The length and size of everything designed with the characteristics of what would work best with the engine. Can not remember if the article was more about headers than the whole exhaust though. I will try and dig up the article.