I’ve seen this discussed on the forum but no discussion about the dimensions of the Arm Rest Box. According to a post from 2000 a contributor said that he bought one directly from Henly’s in 1959. His recollection was that they came in two different widths. Does anyone have the dimensions and would they would be willing to share them on this Forum? I was also wondering how it was secured? I can’t imagine that it would be safe having it unsecured. The thought of it disappearing into the footwell under heavy or emergency braking isn’t terribly appealing.