Thanks for all the answers so far!
I forgot to mention the engine number, it is, as said, on the right; 5 -
1737929. It is a 318 V8. So if I read it right this number should match the
number on the chassis (if it is still somewhere...)?
The car is definately a Belvedere, by the looks of it. I bought the car in
this state, it was not restored by me. I think it is restored just the way it
originaly was, and not to make it look like Christine. If that was the case, too
many mistakes were made. To begin with the color red is the Toreador red, not
the Royal red which Christine had. Also the interior, which has been completely
renewed, is black and grey in the same pattern the Belvedere used to have. If it
was restored to look like Christine they would have chosen red I guess.