Here are a few pic's I took yesterday, I have mounted it on the trans tunnel, I started with sheet metal screws but decided I needed to bolt it through with 1" diameter washers on the back side.
It has some vibrations or sort when you hit bumps, Normal or not I dont know.
I would also like to add a tray stop of some sort at the bottom and use a strap on the upper side to hold the lap top, It came with Velcro to mount it to the tray