I have just been looking at the M20 rear carrier made by Royal Spares in India (e bay). I have to say on a dull, cold morning in the UK they gave me a good laugh.
The spiel accompanying the pictures stresses at least 6 times how these are made to fit in every respect and are exact copies of the original..even to the extent that EVERY one is tried for fit on an original bike before dispatch. (why would you need to do that with an accurately made part?)
Tiny details that might indicate all of the above is not entirely true are the missing brackets for mounting the pillion seat, the innacurately formed seat support arch and the incorrect angle of the bag carrier brackets.
The rest SHOULD be alright though....
...Ian
email (option): julie@wright52.plus.com