TF 998/999 parts into push button 904 ?

50 years ago my buddy Don and I did transmission and clutch work in a $10/month rented garage in Milwaukee.

Don was a former Chrysler dealer rep who handled customer relations and warranty claims. Abd he was a top notch trans guy.

Fast forward to today and he'd be lost working on todays transmissions...and I'd be lost right behind him.
My best friend was a transmission guru. And loved mopars. He died early this year to Liver Cancer. Should have paid more attention and watched more closely when he worked on my 727's...sure miss him...he would have had all the answers to these questions