subaru/robin EH65 carb needed

i have a SXS with a subaru/robin 653cc V-twin in need of a carb, this engine has the 2 barrel carb and its part number is
2-20163
it has the Nikki carb with #s 9411 then 150041016 then under those numbers is 266-604
all my research shows it to be discontinued
my question is: is there another carb out there that will replace it?
Thanks for the help!