There always seem to be someone who thinks that the shape of the latest Fly BMW/Ferrari/Lola/whatever is wrong, and the reasons for some of the differences have been well documented in another thread, but with this particular car, I am priviledged to know one of the engineers who worked on the real car, and in his opinion it is a very good replica of the real thing. Now, whether this means that it just 'looks like the real car' or whether it means that it is 'exactly the same dimensions in every detail' as the real car, I cannot tell you, because although he purchased one of these models I very much doubt that he sat with a steel rule and micrometer and checked all the measurements.
Personally, I admit to not being an expert as far as the exactness of a model is concerned. To me, it looks like the car I have seen in photographs of the real thing and so for my requirements that is good enough. To this end, I do not know if there was a difference between the two real cars as far as both the model Fly Ferraris are concerned, as quite obviously the mould used for both of these models is the same, and we can hardly expect Fly to make an additional moulding just to (for instance) raise the roof height by a millimetre.
Thanks to the quality of Fly, companies like Scalextric, SCX and other were made aware that they had to increase the quality of their product to compete, and over the past few years they have done exactly that. As much as I appreciate that some collectors are more 'enthusiastic' than others, I also think we have to remember that at the end of the day it is a toy car - nothing more, nothing less - and it has become somewhat of a habit to kick out at Fly for one reason or another just because they exist.