I think the first pic is really, really interesting. It is an electronic, self-activated, vacuum leak detector, or ESVLD. They only made it under the hood for one year model. If you replace the vacuum line,
and properly splice those wires, yours will probably work again! Or just remove it and plug that wire into something else.
The second pic, I think, is the wire for the auto tranny kickdown function, but I may be wrong about that. Harnesses were the same for each vehicle, but some options were left out,
so there are plugs you won't use.
The third pic... much of that wire will go away after you Nutter. Be advised... you need to do a better job of permanently attaching those wires. Maybe they are temp for your purposes
at the moment, and if so, apologies for the lecture!
Your manifolds came out dang fine!
Go back to your giant pics, click edit, and resize them. It is hard to read your posts on this page... scrolling, scrolling, scrolling.... ever scrolling, more scrolling, continued scrolling.... more and more scrolling, left to right scrolling, more scrolling than anyone would ever want to do, in a monotonous sort of way, boring really, and now I am tired.