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I just picked up BOTH the extensions and the headers (PACESETTER) for $345 from Drivewire.com... I'm using them with my supercharger build. Yeah they aren't 1 7/8 or 2" headers... But they will flow just fine, even more so.. the exhaust gas velocity should give just enough back pressure to maintain torque while building horsepower. Big mistake most of these builds make is that they design the car's build to flow at X amount of air but only flow half of that... this kills backpressure, which in turn flattens your torque curve or restricts it. And with the Camaro as heavy as it is... I'd want a torque curve as close to my HP curve as possible. Check out most builds with BIG pipes... the torque curve will sit around 550 while the HP hits 650-700... that's just ridiculous. Even the Bugatti Veryron doesn't have HUGE exhaust piping (I've been under it). That's a V12, quad turbo. It's all about EGV and EGT's.
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