I just bought from my good friend a 2004 Copen 660 turbo. It is a wonderful car drawing a lot of people's attention. I drove it 3 hours non-stop and found it stayed on the track and pick up speed as soon as I wanted it. The car is in very good condition except the convertible roof was rattling and it is annoying. I am seeking for help for a service manual so that I can fix it.