80's Yamaha TriMoto 2 stroke 125cc carburetor needed
 

hello
I have a yellow Yamaha TriMoto 2 stroke 125cc, I need a complete carburetor. I do not have the part number because I do not have the old carburetor?
I am not sure the year of it or where to get the info off this 3 wheeler?
Anyone know where I could find one or some good salvage yards #'s in the usa for this please?
thanks