Schmalspur-Modell-Forum

Does anyone have any photograhs or diagrams of the boiler in the cab of a 2091 pre 1960 please?
I have a couple of overhead plans but need a view showing the shape and height.
In the plan attached, the boiler position (orange) is clearly shown and there seems to be an intake grille at right - rear of cab which is not there after 1960. A grille does appear on the opposite corner though in all years.

I have sourced a metal lamp socket which is the correct diameter but not sure if too tall or too short for the job.

In situ ....