Pictures of the governor and dash from my late D4 6U. It has an early pony motor so I'm assuming governor should have a flat cap to suit a late dash.
Witness mark in dash from governor nose. I don't know how long it was run like this.

It seems every governor linkage I see has been welded up.
That is interesting. I have never given the governor/dash any thought. No "dimple" on your dash. I suppose one could make one or bore a hole out for clearance. You already have the smooth faced one, solution in hand. Never seen any gov linkages welded here.