One question to address is:
How rare does your friend, need to be?
The Indian government prohibits importing cars
- that are left-hand-drive.
- that are over three years old.
One to three year old, right-hand-drive cars are (unfortunately) not so rare in India, anymore !
Over the years, nearly every kind of car is available in India.
I remember Bhushan mentioning that he picked his blue Audi TT,
because it shared mechanicals with a car already available in India -- the Skoda Octavia RS turbo
The presence of Indian service stations and parts availability in India,
was an important consideration for him.
It could be reasonably rare, to get an original RHD convertible or station wagon version of some D-segment car commonly available in India.