i didn't really think of the danger factor, i was thinking of bolting them on securely, but with the g force of a collision, i'm guessing you guys are right.
in my old 4runner a had them on the back seat, worked and sounded awesome. i just would rather they were more out of the way this time.
on another note, would the stock cd player be able to handle them? and should i disconnect the rear stock speakers? i was thinking of wiring them to piggyback off the rear door speakers.
thanks for bringing me back to reality about the roof though, lol