Another 2.5 inch vs 3.0 inch?

FEATURES of the 440-200 TTI header

Designed for: 67-76 A-body, 62-74 B-body and 70-74 E-body chassis.

Primary tube size: 2" O.D.

Collector size: 3-1/2" with 3" 3-bolt flange.

Flanges: 3/8" thick, laser-cut, contoured for a leak free fit.

Material: Constructed of 16 gauge mild steel tubing. Mandrel bent on sophisticated computer controlled bending machines for precise fit and uninterrupted exhaust flow. The mandrel bending process maintains a constant inside diameter of the tube for a smoother finish with no restriction of flow and no crimping of the tubes.

One piece design: One piece header tubes / No slip tubes.

Under chassis design: Above the steering center link design offers maximum header to ground clearance.

Full length header design: Proven power gain vs. shorty design.

Recommended for: 500-750 horsepower.

Torsion bar removal: Not required on B & E-body applications.

Header set includes: Header gaskets, 12 header bolts, header reducer adapters with 3-bolt gaskets & hardware.