vtr engine number

[mahon]

can someone please tell me what my engine number should look like. ive been searching for so loong trying to find it. ive found 306600 is this it?

[saxo-parts]

have you look on your registration document?

[mahon]

ive changed the engine :/ originally it was a 1.1 changed it to, what i fort was a vtr, but now im questioning it.