Hi All;

I am finishing up on my new exhaust system. I'm going with a true duel setup. Will I still see a decent bump on torque and HP if I stay with the factory exhaust headers?
Also I am looking at the Edelbrock RPM series. I want the sound when I give it a good rump, but still semi-quiet when at idle or on the highway. Am I headed in the right direction with the Edelbrock RPM series? Room is limited so I would go with the 7-1/8'' x 3-5/8''x18" size
Thanks
Bill