[StingRay]

On a stock engine rams horn exhaust manifolds are very adequate and can easily run dual exhaust. The rams horn is one of the best flowing manifolds that was made. The old Vette's used a little bigger version. Keep it stock unless you are adding other stuff. The rams horn is adequate even with a mild cam and better intake. Headers tend to push the power band up a bit and without the other stuff to take advantage of them you may actually harm your driveabilty.