Stelvio SUV driver takes high-speed, close-pass and then stops up the road to confront me

Tight, windy country road with little, if any shoulder. With no on-coming traffic, an aggressive SUV driver takes illegal pass (state minimum is 3 feet). For some reason he felt it necessary to stop in the middle of the road, get out of his vehicle, and confront me for yelling and flipping him off. He was operating a lethal weapon and I'm just glad I did not also have a lethal weapon...