Headers for 67 barracuda 318 with no modifications

So, lemmee get this right, you guys are saying that, with a 318/no modifications, spending 600 bucks, or more for a cool sound or a cool look, are good reasons to install headers?
Choot, $600 will buy a heckuva good convertor, that can get you deep into the power curve and make your otherwise stock teener, run thru first gear like a cat on fire.