I repurposed and restored some damaged OEM headlights for my racecar. 3" hole drilled, tube inserted, sealed, and clear coated the lenses. The driver side is kinda pointless as I forgot the carbon radiator shroud had intake vent on it. Ill add ducting from that light to the airbox anyway.

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The driver side one would be nice if you could feed it into an oil cooler or something but routing lines would be annoying.

 

I keep the oil cooler in direct airflow Infront of the radiator.

 

Very nice!

How'd you keep the drill going straight and centered with the back? What'd you use for sealing the headlights?