Includes One Swept Lake Header Kit for the Chrysler Poly 301, 331, 354 hot rod motor (see motor applications below). These flanges are cut with a CNC HD (High Definition) Plasma cutter out of 3/8” Pickled and Oiled (P&O) steel. P&O material is hot rolled steel that has been dipped in acid to remove the mill scale and then a light coated lightly with oil to prevent rusting. The end result is less work to clean off the mill scale as needed with hot rolled mild steel.

Kit includes:

1 pair – 30″ long steel megaphones (1-5/8″ inlet & 3-1/2″ outlet)

8 – 2″ OD, 0.065″ wall plain steel (not aluminized!) 70 degree mandrel bends

1 pair – 3/8″ thick exhaust flanges – specific motor application listed below

(photo is shown just for reference, contents listed above is actually what you will receive)

Motor Application:

Chrysler Poly

301 cu. in (1955)

331 cu in (1951-56)

354 cu in (1956-58)

*more applications/years may work, please verify before purchasing.

Ports designed to be used with 2” exhaust tubing.