I think I messed up my car, legality-wise. I cut the crossbars out of the radiator opening of my 89 RX-7.

It was running hot, so I was messing with the ducting and for some reason I decided that if you can put an air-dam on a car, then you should be able to mess with that area of the stock piece. Without reading the rules carefully, of course.

So this is expensive to fix. Is there some way it's justifiable under the rules? (Not that it matters, but my intent was simply to keep the engine from blowing up again.)