Ajax Search and 2ndary DB

Would it be possible to integrate into the ajax search either - Google search results, OR a second Database from Vbulletin?
I really like the Ajax Search, but unsure how I could extend it to be a bit more useful.

Would it be possible to integrate into the ajax search either - Google search results, OR a second Database from Vbulletin?

Not for the moment without change lot of code.

I plan to integrate this new feature in the future. For that I will use the &subSearch parameter as follow:

[!AjaxSearch? &subSearch=`modx,db2:wordpress`!]

By this I will define two subsite: Modx in the same database and for instance in an other subsite (here wordpress) with data in an other database.
But before to search data in an other database, I need to manage the display of data by adding a group of results notion. Not so simple but in progress ...

I agree it would not be simple, and if that other DB is HUGE (like my forum DB, I would think it would be slow)
Thanks for the reply, but I agree it would be a big undertaking.
Maybe the simplest think would be a Google search of the main domain and the sub domains.... But still Ajax Search is just so cool.