Hi
I recently pulled the engine and the transmission out of my 58 Super 88.

I´m unsure if this is the original and numbers matching tranny and if it has been out for a rebuild once.

The shifting was like you would expect from an old jetaway.
1-2 gear barely noticable, 2-3 neck salpping bump, 3-4 unnoticeable.
I had no chance trying to tune the throttle valve linkage before so im not shure if that could soften the 2-3 shift.

Is there anybody out there who can answer the following questions:
see pictures attatched

The small riveted number plate says it´s a 58 transmission. I´m aware that everybody can change this plate easily. What does the casting number on the other side of the housing mean? Is it really a 58?

Which color the trannys were painted by factory? Were they painted at all? Is it possible that the dark green is original paint? If not which color it´s supposed to be?
Is this an indicator for a previous rebuild?

Does the numbers on the engine block say ist a 58? Because it starts with a 57?
The punched engine number on the right head matches the engine number printed in the owners guide.

Many many questions

looking forward to your answers

Thomas