I just saw this.. I know you're passing on it but ill provide some info...the sedan weighs 100lbs more than the coupe, so nothing really. 100% stock with just a tune from us I've gotten 2 sedans into the high 12s@110-111mph. They get like 22mpg combined average. 340whp and 360wtq is easy to archive, 360whp and 400wtq on e85. You just need a tune to run e85 since its direct injection. Anything else you want to know, just ask! I've had my 2010 SS turbo for 3 years and had a 2007 ss supercharged before that