[OldCreek]

The plate above the oil filter covers openings into the block that can be used for oil cooler/radiator. You can tap that fitting for an oil pressure sensor or oil line to your stock oil pressure gauge.

The black plastic line is the EVAP line. I believe it comes from the tank/charcoal canister and pulls vapors into the intake manifold to be burned off. You can easily put a cap over the EVAP solenoid and delete it from your program/computer so that you don't have a MIL/Check Engine light coming on.