Porsche 911 European Racing Headers for 911 3.4 - 3.8 Liter Motors Engine Components_Valve Covers You want the bumper profile

You want the bumper profile to agree with flare width

Average pair weight: 20 lbs

Cookie-cutter outlets: Not included

Profile: Flat Turbo-style arch with enlarged torsion-bar opening

Porsche 911 European Racing Headers for 911 3.4 - 3.8 Liter Motors Engine Components_Valve Covers You want the bumper profileThese equal length Porsche 911 racing headers are sized for 3. 4 3. 8 liter engines and use mandrel bent primaries with scallop cut three into one RSR collectors. Dimensions & details Engine range: 3. 4 3. 8 liters Primary outside diameter: 1 3 4 inches Primary inside diameter: 42 mm Average pair weight: 20 lbs Material: 16 gauge mild steel Construction: Equal length, mandrel bent primaries Collectors: Scallop cut three into one RSR style Included