my new intake setup

this new intake setup that im making that I will be using soon consists of an ebay cone filter, a 3" pluming elbow pipe, a rubber pluming coupler, and a plastic drain grate.  I will glue or melt somehow, the elbow to a plat rectangular piece of plastic that I will then put over the area that used to be where the filter was located.  cost of this
pluming stuff from osh: $10
cone filter: $5
sheet of plastic: already had

vs.

new oem replacement filter that fits the porsche air box:
$60-70