Overhead DVD placement???

[ROCKYRACCN]

Hello-

My family just bought our first van (2008 Sienna LE), but the one we settled on did not have an overhead DVD player. I am going to install one myself- but have no clue on placement.

I know they need to be attached to a cross-member above the headliner, but the 2008 Sienna does not have center dome lights to explore around to find where it is. I don't want to drop the whole headliner to know where to cut/bolt.

I'm mechanical -so I'm not worried about the skill set needed - but I don't want to make this a bigger project than needed. Every how-to references of an existing center dome light or controls

anyone have a measurement that would help? Any other tips or tricks?

(BTW: installing a 9" overhead DVD I found on Amazon dot com)

Thanks!

-Brad