He's right. Headers will mostly be sound until you need all that flow. You'll get more HP from them as your bottle neck for flow changs throughout the engine setup, however, they sound freaking remarkable. I recommend American Racing. I have them, and comboed with a decent cat back, the old school sound is there. I think, more often than not, people tend to go with Kooks.Are you doing any other major upgrades like ported Apache heads, cam, a forged bottom end, nitrous or FI? The SRT shorty headers are good for up to 8 - 900hp. If you're just doing headers then you're spending 2k for maybe 20 - 30 horses tops. Personally I'd put that money into the engine itself.