1G Aftermarket Rear Spoiler?

[leet]

The dissadvantage is that the DSM isn't designed for an undertray. I am sure you could make something that would be better than it is stock without compromizing ground clearance more than 1/2 to 3/4 of an inch but to add tunnels to maximize effects you would have to reduce the clearance considerably.
From what I understand ( I have not studied a lot of aerodynamics) the ground effects on the side of the car have to be as low as possible to prevent air from sneaking in from the sides.
Like a race car the downforce will be greater the closer you get the front and sides of the car to the ground.

I think something like industrial conveyer belt material backed with rigid abs or something would work well because it would prevent air from going under your car but would bend if you hit a curb or speed bump. The dissadvantage is under pressure or vacume it would tend to distort.

I've been toying with the idea of cutting out the spare tire well, to make room for a venturi. I'm not sure if the gas tank would be in the way though, I'd have to look next time the car is on jackstands. Ferrari has inspired me to think up all kinds of wierd crap to do to my car