Toyota Carburetors
Toyota applications use a  variety of two barrel "down draft" carburetors originally manufactured by Aisan.

Toyota is probably the most diverse of all the Japanese car makers when it comes to carburetor engineering.
 
Toyota retained Aisan throughout it's history. Together these companies produced a wide variety of shapes and styles which can be generally categorized by the choke systems.
 
This list of choke systems includes manual, air heated, hot water heated, and electrically heated models.