please help id this tecate carb

[3 or die]

This is the carb that was on my 86 t3 that I am currently building. It ran great but I dont think its original. Looks allot like a kx carb maybe. The only number on it says v20 and then a 4 right underneath, Thanx for looking

[dcreel]

Try www.sudco.com

They have schematics and parts diagrams for just about every Mikuni carb made.