Looking for someone with S74 fast ratio steering on a 71 E-boby

[blubau]

I have owned a 1971 Challenger Conv built May 24th 1971 with the S74 fast ratio steering.  I have owned the car since 1978.  I am searching for someone that has a late build 1971 Challenger or Cuda with S74 to provide the casting numbers from their steering box.
Thank you,
Bill

[CUDA JAS]

I believe all the steering boxes are the same.

The Pitman arm is what makes the fast ratio steering.