I can’t give you an answer to your question i’m afraid,but i’m looking into a dynaudio retrofit using a full kit from Aliexpress.
First thing,check for import duty/vat on what you buy.
I put a post on here recently regarding Aliexpress-whether the items for sale were ‘genuine oem’.
There was mixed views on the subject,I was and still am sceptical,but the seller I spoke to answered questions and provided more photos for me to study-they appear to be genuine.
Vw has a massive presence in China producing cars and parts,so why wouldn’t genuine parts filter through to the Chinese equivalent of EBay like over here?
Then again,you might not be bothered about OEM,so it’s not a problem.
Hope you get sorted.