Originally Posted by rumelk
what does that equate to in terms of accelaration?
With all else equal, and assuming an 11% weight gain, you're looking at a roughly 3.5%loss in acceleration, which varies as per the cube root of the power to weight delta.
So, a 12.6 goes to a 13.0, and mph goes from 112 down to 108.
Roughly four car lengths in a quarter mile, and the coupe is lightly jogging away at the finish.