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I fabricated a rear under diffuser for the G35. Since my car has a single exit exhaust, there is a large empty space behind the rear bumper where the original factory exhaust was installed. This empty space would catch air and act as a parachute at high speeds, slightly slowing the car down. I cut a large section of the rear bumper off to allow for increased airflow, and fabricated the rear under diffuser to go from the rear cross member to the rear crash bar. This is the only picture I have of it, but I will take more pictures when I get a chance.

I removed the door panels, which left no place to mount the window switches. I removed all of the unnecessary wires out of the door (speakers, locks and window controls). I extended all the wires for the window controls and door locks and moved them to the center of the car. I also removed the center console and some small miscellaneous interior pieces.




I added a NACA duct to the rear drivers side. This duct is attached to a pump with a filter, the hose attaches to a fitting on my helmet and provides me with clean cool air during a race.