First pic is charcoal canister purge valve and pipe is the breather pipe
Gmmp looms won't have purge valve wiring
Breather pipe I think goes to inlet manifold just behind where throttle body runs
Bottom pipe pipe is coolant pipe so water can go out of head and into radiator
Is to bleed air from heads
Needs to be hooked up to top radiator somewhere
Oil pressure don't worry bout
Remove the orig and fit yrngauge or lit sensor
Gmmp looms only have the bare essentials
That's y they are cheap
Some stuff is not perfect
Plus
oil pressure sensors change from old to new type that might be why things are different
Yr gbox might not have speed sensor as e later ve boxes didn't have sensor on box
I would need pics to see what it looks like
I would send the loom back and get them to add the bits that's r missing
Heheheh