Used TTI340A-C5 headers, designed for 67-76 A-body chassis, feature a 1-5/8" primary tube diameter that steps up to 1-3/4" secondary tubes, merging into 3" collectors. They are recommended for engines producing 320-575 horsepower and are built with 3/8" thick, laser-cut, contoured flanges. The headers are made of 16 gauge mild steel tubing and are one-piece design (no slip tubes) for A, B, E, F, and M bodies. The C5 finish includes a polished silver exterior and thermal barrier coated interior. $700 and pick up in Chicago would be nice
