Idle problem on C15 261 CU IN

[TCLARK]

Here is a pic of the spacer, I also drilled and tapped the other side
but plgged it off.
I smeared a tiny amount of "the Right Stuff" on the manifold gasket. Good seal

The wiper arm and motor I think are original cmp or possibly jeep.
I have good wiper motors and one more arm. Just need the blades

I found this in an old drawer in the shop Looks 40's era, its just a
glorified Vacuum gauge but still works,also includes instructions ha ha
Terry