where i can buy a new pierburg ?

Hello
i want to buy a new pierburg carb but i cannot locate it anywere in the net
i own a golf cabro 1987 gl 1.6L

On the plate beiand the carb is wirriten:
pierburg
7.20949.00   12v
7/166
026 906 283 A

i saw many kind of pierburgs from that year but i need this exact model.
where i can find? And i need a seller that can send overseas

thanks

uri