Update:
I took a picture of the bay and test fit some parts I took off some my friend's last build.
Stock Setup
Without airbox and battery (Look how much room there it
)
Test Fitting with 2.5inch pipe and 2.5inch filter (not so much room anymore
)
With the test fitting, I know I can only fit half a foot of the 2.5inch pipe straight across from the TB if I want to place the filter right at the middle of the plastic trim. With the test fitting, I will not running a chamber intake that I planned earlier due the lack of lenght of the pipe. I would like to add that with that filter it takes up about one and a half inch of that tube to mount. I did not take measurements of how much space is remaining some the point after the filter (across from the TB), but I'm petty sure I have another half foot with my best guess.
After contacting with Dave, I will run somekind of reservoir bay with a 6mm hole to prevent hydrolocking (with the test fitting, I may be able to run a little more than a inch for the bay), and mess kind of item in the opening of the scoop to preventing rocks, bugs or tiny birds from entering.
Another thing I would like to mention after the test fitting is that I can use the bolt location of the OEM airbox for my under hood ducting. At this point I haven't decided to run a fully close duct (where there is no opening from the airbox to grill) or just a "flat" panel from the opening to the gril for a better ram air effect like "wontfit" mention.