You can find it in uniqueunits.xml or similar.
Just remember "unique."
Oh yeah, and when searching in the XML files, you will not find "Venator" anywhere. It's called "Jedi Cruiser," and when it DOES have "Venator" it's spelt "Venetor."
So Search in the XML file for "Jedi Cruiser" and "Venetor"
(Seems they have a little problem spelling... Hm.
EDIT: Oh yeah, I made the Venator as powerful as a Victory Star Destroyer, if not more, since technically... they should be the same strength. *GASP*.
The original Venator in the game was just cannon fodder. ._.