With that in mind, we set out to improve the exhaust side of this '68 Chevy Nova. While the car isn ... and even broke the flange on the driver-side header right between the numbers one and ...

There's a lot to be said for the deep throaty sound of cool Flowmaster mufflers barking out a tempo from a hot Chevrolet mill ... tube sizing, and exhaust pipe sizing. Flowmaster tells us if ...