The engine and gear box will not have the same number since they were built on different lines. The way I think it works is ferrari builds the engine and gearboxes and whatever number winds up in whatever car is how it works. Then the engine and gearbox numbers are recorded connecting them to that particular car. Im not sure that right from the time the engine is cast they know what chassis number it will end up resting in until either the time they mate them or shortly prior to it.
considering it a hand punched designation, it would be simple enough to punch the numbers when the assy is together with car and keep it homogeneous.
When I was attempting to get a certificate on my first car, I amost gave up. No matter how many times, or how many ways I entered the data, I got that same response. Someone gave me some advice and I ran with it. The second car was far easier to do, once I knew how. Enter all information in the fields on the owners site and submit it. Send them an email, including your screen name and password, and the entire number sequence for each unit, F106ABXXXXX for chassis, as an example, etc.. They will email you shortly to confirm or deny, and if confirmed you will have a link to a pdf file in your garage to it. You can then download the pdf file and print it.
The Heritage Certificate comes and goes on the Factory Site.... As mentioned above the 308 components are not 'numbers matching'......so they are all over the map....... I'd agree with 91tr the canned response is the way of saying "we cannot be sure" in Italian........ If I remember I'll climb around on mine and post examples...
I sendt them a mail and here is the answer: We regret to confirm you that the number F106A021*00927 does not correspond to the engine originally mounted on the vehicle whose chassis number is 21355. Here below it is our care to indicate you the original colours of your 308 GTB but unfortunately we can't issue your certificate: Outside colour: Rosso chiaro 20-R-190 Inside colour: Pelle Beige VM 3218 In case you would like to receive the Authenticity Certificate or you would like to have your car checked to verify its originality we kindly invite you to contact Ferrari Classiche, our department dedicated to the defence of the marque's historical patrimony and created to promote and protect the authenticity of Ferrari vehicles. At Ferrari Classiche we verify the conformity of the vehicles and issue exclusive certifications for original cars.
