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.

Increased wall thickness for greater stiffness
Clutch reaction surface designed like the OE
Requires salvage and use of the OE spring retainer damper

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