I've seen SIRs mounted through the middle of the front of the car, right out where the main radiator intake opening is located. But they also had a custom low mounted radiator to accomodate the plumbing.

It seems kind of frustrating to be required to use this "trumpet" somewhere in the intake tract and not have any flexibility with respect to the location of the MAF with respect to the wiring loom.

Maybe the solution is to mount a "unicorn" horn way out in front with the SIR at the end. Don't follow too close though, you'll cut down on the airflow to the engine.