Stew, the shiny bits are press fit,
put them in the freezer for a couple of hours and they drop in, bushings that go into the back of FF engines. They plug into the water jacket at the back of the engine where the freeze plugs normally go, and the purple & black fitting is a quick disconnect for water return. A lot better than fiddling with screw clamps on a hot engine.
As an aside, when I use my lathe and mill, I make chips and generally make a mess. I see other pics without chips, how does this happen?

Cliff
