Genuine Goerend Transmission part #FTC-4R100.

Some of the first steps of designing new products is by identifying the weak points and problem areas of the existing parts and figuring out how to improve and fix them. In the case of the Ford 4R100 torque converter, the main factory components are the weak points. The impeller and turbine being made of thinner steel, and the lack of furnace brazing on the turbine, leaves these parts prone to breakage and catastrophic converter failures.
Rather than try to put a bandage on these weaknesses, Goerend sets the stock Ford torque converters aside and looked to the stronger, more reliable Allison 1000 torque converter. Using the Allison 1000 furnace brazed turbine and impeller, Goerend is able to produce the highest strength 4R100 torque converter.
Goerend Difference:
Designed and manufactured in-house from start to finish
K-factor and torque ratio tested on in-house dynamometer
Billet steel cover
Made from steel forgings to reduce porosity
Multi-bolt pattern
Billet steel piston with complete damper assembly
Insulates shock of crank pulses from rest of driveline
Extends life of converter and transmission 
Made from steel forgings to reduce porosity
Stator guaranteed to never break
Designed to rotate better when going into coupling mode
Creates a 
venturi effect
to help torque multiplication
Dual Torrington bearing stator design
Lugged stator race prevents one-way roller clutch from so spinning out
Patented internal design
Insures lock up on computer and valve body signal
Eliminate