Are headers worth it for me?

Kern Dog said

Your gearing and cubic inches will minimize the gains that headers usually get you. You'll still make a few HP but a 3.55 or 3.91 gear and a 340/360 would see 20 HP or more.
Hedman headers hang low too. I've used them only because they were either given to me or bought CHEAP. You'll still have to fit the exhaust pipes to the headers, $$$ will be spent somewhere.

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That's just not true, unless you have your car lower than stock ride height and or have shorter than stock front tires. I've used the Hedman type, Hookers and Summit. They are all bent in a similar fashion. I had to work HARD to make any of them scrape on a tall speed breaker. They hang lower than the God's gift TTIs or Dougs, but they work well as long as your car isn't in the weeds.