vrsmith,

I finally remembered to try and find which code indicates the five speed on my 300E. There are a zillion three digit codes on the plate that is riveted to the core support.

I found the transmission (getriebe) code in the back of the maintenance schedule book, it is 717430 00 08642. I believe that 717 indicates transmission and 430 indicates the transmission option code.

I THINK if you find a 430 as one of the codes on the core support plate, this means that it is an original five speed.

Do you have the maintenance schedule booklet or are you completely without any original records.

Let me know what you can find and we will continue our attempt to confirm your original transmission type.

Have a great day,