Refer to my reply to NZHD's post,"carburetor",it will explain my situation.
I'll make you the same deal. If you can supply me with a good accurate description,maybe a picture or photo if you have one, of what you're looking for I'll see what I can find.
I'm not very familiar with the old big twins(my specialties are '52-'56 K model and '57-'69 XLCH),
but I'm willing to give it a shot.
Dave,in western Pa.,U.S.A.