I'll get some measurements sorted out John. The chrome trims for the head restraint stalks are MGB.
Folding the seats is fiddly, as you have spotted. Either both together, or more usually I pull a head restraint out. The other thing is that the seats have to be in the same position - luckily I and MrsW are similar sizes.


DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4