This header produced extra 8-13hp gain . Manufactured by the "Advance Revolution Techniques"
It's High quality, 14-16 gauge T304 stainless steel, C.N.C. mandrel bent equal length primary tubes for optimum power and sound.
"Advance Revolution Tecniques" sport headers save 10.6lbs/4.8kg over the stock manifolds and do not include a pre-cat in the collector.