These HDR100S Headers are designed to fit Big Block applications. Pypes Performance Exhaust systems and accessories are fabricated using stainless steel materials that will provide their owners with long term service and satisfaction and Pypes products are backed by our limited lifetime warranty!
Features:

• Collector Tube Size: 3.5 Inch
• Engine Manufacturer: Chevy
• Liter: 6.5 Liter
• Tube Direction: Down Swept
• Port Shape: Round
• Tube Diameter: 2 Inch
• Material: Stainless Steel
• Sold As: Set
• Superior Construction And Materials
• Tig Welded
• Bolt On Design
• Easy To Install
• Lifetime Warranty
• 304 Mandrel Bent Stainless Steel Tubing
• Heavy Duty 3/8 inch TIG Welded Flanges
• Full Length Design That Fits Both 4 Speed And Automatic
• Big 2 inch Primary Tubes And 3.5 inch Collectors
• Complete with Stainless Reducers; Bolts and Gaskets
• Includes 3.5 inch To 2.5 inch Collector Reducer

These headers will not work with the 800 series steering box.