What carbs are these?

[HOOD66]

Please help need to rebuild them for a new build i started. i purchased an 81 xs650 in boxes not sure if these carbs came off it. Is there a number somewhere on them or how do i tell what model they are?
Thanks

MIKUNI???

 

[5twins]

Those appear to be a '76-'77 set.

 

[HOOD66]

thanks 5twins