cruzer2012

Hi, I am new to mb and just after a bit of advice. After crashing my w220 s320cdi in the snow last month I am on the look out for a new car. I've got my heart set on another s class w221 cdi. I will be buying a used car and there are a few that have caught my attention. One of which is 320cdi swb but it has the factory fitted AMG pack. I know it has the AMG alloys and body kit but could any one tell me if that is the only difference compared to the original car i.e. engine/performance, fuel economy etc. Also is there anything to look out for when buying a w221 cdi, the car in question has 72000miles.

Thanks. nav