The 3.8 and 4.2 SP book identifies the part as C.18270 connecting lever assembly
I have several of these boxes here, some do have a lever length of 4.5" and others of 5" length.
I did not find a difference between 3.8 and 4.2. The minting position is the same, hence the distance to the bulkhead also.
I thought it could be of an automatic, but also there the SP book says the same part number.
The both work, and the longer lever obviously gives more movement at the throttle.
But who can tell what for are the short and theblong versions for.
Many thanks


And then I have this:






