Any advise?

Decide which you value more, a happy neighbor, or your
property. You're not going to get both.

That is NUTS. Would you give away 9 feet of your
property to your neighbor? I doubt it.

I might, depending on the property in question, and
whether the neighbor in question ****es me off.


I say build the fence, 6 feet high, move his car yourself,
and if the neighbor wants to sue let him.

Once he realizes he can't intimidate you he will cool off.