free breathing slots to primp up car

[Rave Racer]

        On "The Simpsons" speed holes were added with A) Pickaxe, and B)
Glock 17 9mm wielded by Mafia "Wiseguy".  I watch "The Simpsons" for my life
philosophy's.

> I'm considering the wisdom &/or necessity of trying to add additional
"free
> breathing" air flow slots to the front of the bumper to expose, and
capture
> more airflow for cooling through the front of the car.
>
> Any tips, tricks or BTDT experience on the advisability of either or all
of
> (1) cutting, (2) sawing, (3) sanding, (4) router (5) drilling or (6)
> otherwise (?? hot wire cutting) adding slots - say two or three rows of @