Pressure plate

Now I have the same type of disc in my 4spd Cuda and it has been a way long time sitting so ....
IIRC, when installed on the flywheel, you could or can take that throw out bearing and press it against the fingers like you show above and actually move it around some.

Point being that all the fingers move independently but when pressed on forward they apply even pressure to release the set up.

See if that is in fact true please.