So, bounce some ideas off you guys. I am not running heat (my heater core was shot and didn't feel like paying to replace it) so I would like to delete the entire "mess under the intake." I also hate the design of the plastic pipe that feeds the mess. I have a couple directions I could go.
From this:

This would be my goal, fab a new block off pipe out of aluminum:

Or is the overflow hose #4 in the diagram a necessity for proper flow? ..In that case I could fab a pipe to do this:
