Help identifing carb, off 400ex motor, have numbers.

[hrc200x]

Had a 400ex motor and sold it, buyer didn't want the carb. He said its not a 400ex carb, the numbers on the side of it are:

PD
K1AAJK

its a keihin, after the last "K" there was a weird number or letter, looked like a 1, but it had a line or scratch though it? Anyone help?



http://www.boreal.org/~kimball/carb1.jpg

http://www.boreal.org/~kimball/carb2.jpg

http://www.boreal.org/~kimball/carbnumbers.jpg

[44oEX]

I don't know what the h*ll that is but it's not of a 400ex. Maybe an old 350X or something like that.

[skemp]

That might be off an XR. They ran PD's, but I don't know which model.