Bristol 400 rear axle gears

[Hydroglen]

Thanks .....as I suspected. Yes I have my 400 manual and parts book, as
well as having downloaded the 401 manual from Ashley.
Part of my initial confusion was that it looked different from the blowup /
parts of the 400.
Whilst surprises like these are annoyng, the upside is greater
familiarization with the car and "meeting" helpfull and knowleadgeable
people.
Thanks again.

Dorien