I'm hoping to find some shallow ~5" 2 or 3 way and squeeze them into the front lower corner of the doors (may have to make a raised mount for them as there isn't much depth available) and then, like you, some 6-1/2 3 ways in the waterfall. Saw somewhere that it's possible to fit an enclosed slim sub under the passenger seat... update: JimLev's build thread had some discussion on speakers, around post 270 on pg 7 https://thefactoryfiveforum.com/show...fer#post366958