The flat bottom and the red stitching. with the AMG logo of course. That's allHonestly the options didn't sound that excessive. Most of what he mentioned was CF trim. IIRC the 19" wheels come with summer-only tires, so if you have to deal with snow they're a non-starter. The sports exhaust appears to be standard. That leaves the steering wheel and seats. Personally if the 'normal' leather comes with the red-stitching I'm perfectly happy with them. Anyone know what the difference is between the two steering wheels?