Engine numbers?

[BIGJOE]

hey guys just curious i tried searching the net to not much avail other then where the vin number is but im shipping my GN back to the states from england, but they told me to make sure the engine is the same number as on the title or else it causes huge problems, where is this number located on the engine. thanks

 

[87GNSteve]

LH side of block bell housing, facing out.

 

[TurboDave]

Here's where it is: