I am positive I have the 790cc. The dealer sold it to me that way brand new and all the paperwork shows 790cc.
If the dealer is wrong, well then there isn't much I can do about it anyway.
The VIN will not decode the engine size, so if there is an obvious way to tell, I am all ears.

Now hatred is by far the longest pleasure; men love in haste but detest at leisure. 2006 America 790cc