I installed an OEM oil cooler from a 1990 Eclipse.  This is the air cooled cooler and not the cooler that utilizes coolant like every other year.  I ran this setup on LILEVO1 and installed it better this time around.  I even cut some underbody plastic and attached it to the cooler to better duct the air through the cooler.  I plan on sanding, using putty, and touch up paint to make the bumper look stock.  This will eliminate the jagged edges and turn them into smooth curves.

Parts list:
16mm x 1.5 to 8 AN Adapters x 4
Straight 8 AN coupler x 1
90 degree 8 AN coupler x 2
45 degree 8 AN coupler x 2
Few feet of 8 AN braided stainless line

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