Other Steve,
The fitting is very simple indeed. 2 minutes with a hacksaw and you’re done.
Here is the rear of the Beetle/Passat sunglasses holder:
View attachment 84294
The areas I have circled in blue need to be cut off (flush) as these spacer infills are the wrong shape and size to insert into the existing headlining fabric and biscuit holes. Firstly push the metal black looking bolt hole guides out from the rear then get sawing and discard the removed spacers.
Now do exactly the same on the rear of the A2 handle you’re removing as this of course has the correctly shaped spacer to insert into the headlining biscuit to the roof.
Use the freshly cut spacers from the original A2 handle along with your original bolts and you’re done. No more than 2 minutes.
This simple addition along with rear electric windows was all the other driver here wanted from an A2.
Hope this helps.
Kind regards,
Tom