Technical Gearbox code?

[alib1]

Have a 1.4 8V 2006 anyone know the code or where to find it for the gearbox on this engine/year?

Experiencing a rotational knock in a straight line when you shut off and coast. Sounds like the noise outer CV joints make when cornering but this is doing it in a straight line and very noisily. Any help? It's not wheel bearings or tyres

 

[Andy Monty]

Is it not on the Vin tag in the boot under the carpet? ((i could be wrong know th e engine number is on it))

 

[alib1]

Ah I'll check that thank you. Also anyone know if 1.2 8V gearbox fits a 1.4 8V engine?