Hello Phillpe, What is your connection with Automobiles Vanderveken (www.vdvgrant.be)? Or are you interested in buying the car?
Is this the one? http://www.allferrariparts.com/cars/mccstrblu.html http://www.finecars.cc/en/detail/car/8310/index.html?no_cache=1&cHash=c3c518a5a9 Edit:I just saw that you said Ex Dennis Mc Caan.
According to the factory build sheets, #1758 has a "Data Montaggio" of 5.9.74 and was originally painted "Giallo", yellow. It's "N. Scocca" is 165, but no "Data invio a Rimessa" is listed. Some chassis numbers of racing stratos can be found at: wspr-racing.com If you have information as to 1758's previous European registration, there is information in the appendix of Nigel Trow's book on the Stratos indicating which "Targa" raced where. Everything indicates that 1758 was a road car converted to look like a Group 4 car. Hope this helps.