The LSD issue, like most things Morgan is shrouded in haze. It was said that at some point in long door production that all axles became LSD.
The only way to be sure is to jack the back end up and turn one wheel. If the other wheel rotates the same way its an LSD. If it rotates the opposite way it isn't.
I've had three LSDs. None were noisy.
PS. No such thing as definitive with Morgan production. They were built in batches.........of one.
My 2012 Plus 4 had an LSD.
