Quote:
Originally Posted by Chris V
It is crimped to allow a common pet number between the coupes and the convertibles. The convertibles have a brace there which the coupes do not have.
It does not materially impact power, though it does impact sound.
Source: I asked a GM engineer who worked on the development of the car.
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Thanks! That sounds reasonable. I suppose I was looking for a slightly more official answer, but this will suffice.
Does anybody have a picture of this brace that the exhaust must avoid? I tried googling, but I didn't find an actual picture.