I am selling a complete engine for an xk140MC on BAT. Someone says they believe I have the wrong carburetors. I am not sure but believe they are correct. Anyway I have three sets of carbs for an xk140,(I think). The set on this engine has the markings - M6 and SJ on the top of the carb and on the side of the body is AUC 6040 X on both carbs. the rear carb has the written number 6044 under the AUC 6040X and the front carb has 6041.
The other set of carbs I have have the same AUC numbers etc but the top flange has the number 7 then L11 and they same written numbers under the AUC as I mentioned above. The other set is on my car and is in a different location.
I think the letter and number after it might be the date of the carb. The engine number on my motor is
Can someone please tell me whether A. Both sets are correct. B. One of the sets is correct, or C. neither set is correct.**