i took a stock headlight, and gutted the rear portion, minus the turn signal area..so the back of the headlight that protrudes into the opening in the header panel crates a scoop in to the engine bay(with batery relocated)when the lense is cut an modified wit hfiberglass.
then there is a fiberglass box inside the enigine compartmentn that fits to this unit and the filter sits inside, so when assembled on the car, teh filter is sealed in it's own compartment open only to outside air.