Help understanding the engine bay

son, you got some cleaning to do

lets see, pic 1 seems to be a wierd vacuum tree
id pop it off and cap it off
mount the coil where ever it looks nice, but im not sure if that one needs to be mounted a certain way (vertical, or horizontal)

radiator thing, not a clue

pic 5 seems to be an oil pressure/temp reading site someone decided to move it way the heck out to get a oil temp sensor on there, and then didnt hook it up

remove the entire thing, take the large sensor (the one on the bottom of the T) and put that in the whole where the copper tube is installed

finally, your heater core is bypassed
(look at this big ole hose, going from the waterpump to the manifold)

there should be two of them, one going into the heater, and the other returning back into the motor
before you touch those, ask yourself, were they lazy when they did it like this...or did they bypass my heater core because it is leaking?

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Thank you sir! Very much appreciate the help.
Much work to do.

The heater box wasn't even in the car when I got it, so I have a new one now that I know works. Just gotta relink it.