dumb question about chokes

Hi All,
On a type 3 single sidedraught carby 32phn i think,,
the choke on this carby is a 6v
i believe no 12v type 3 single carby cars were sold in australia
(correct me if i am wrong )
will a 12v choke from a twin carb type 3 fit on the single carb ????
are the 12v chokes left hand and right hand ????
if so is the choke wound the right direction for the single carb and is
it physically the same size ????
i have sent my single carbs away and didnt think about the chokes.

sorry for the long winded question
Cheers Peter