ECU - might be hondata or chrome, as stock ecu without a piggyback will crap itself if it sees boost.
oil line - looks like they took out a grub screw from the vtec oil feed area.
Just need to take it out and replace it with a grub screw
Injectors - looks like stock but its hard to say, you gonna have to take them out and find out if they are or not
That thing is the bleeder for the clutch slave
Head gasket looks like the stock one but its hard to say they all kind look the same.
Your not gonna know until you start pulling it apart

