Sonnax offers forged steel converter piston plate CH-DA-6P for Chrysler 10" lockup converters. Machining the plate from a steel forging allows the wall thickness to be increased in critical areas, making for a less flexible and more durable piston.
This piston is designed with the same smooth reaction surface as OE. If you prefer a piston with a proper bonding surface, see Sonnax piston CH-DA-7PB. CH-DA-6P is also designed for a .045” thick friction ring, not the factory .070” rings. See instructions for easy assembly.