OK I have here pics of a manette base , Not a 1 1/2 litre but i don’t think that has any effect.
The tape next to it gives scale
Noticeably it has two slots across half way round the circumference{ no I have no idea why] and these may coincide with the loose part on Davids stator tube
I would suggest you won’t be able to repair the broken end of the stator tube so will have to replace it
It is pretty straight forward
1 /2 steel tube of the correct ID[ wall thickness can be sourced from a K VII, V < VIII< or MK IV 6 cylinder car . which is soldered into the round base plate [ silver soldered I’d suggest .]
The slot cut with a 1/8"end mill so as to have a round end
