I have a JL stealthbox and love it. It is on my 2001 expo and is great because I don't lose any of my cargo space. It replaced the little bucket/carrier area in the back right of the car but sounds great. The amp is mounted underneath my front passenger seat and the box itself is made to fit perfectly in the car above the wheel well. I replaced the actual sub in the box from the stock JL with an upgraded JL 10". You can only get a 10" in that area, but it still knocks pretty well, I'm not trying to shake the ground or anything but it sounds great and is really a nice area to place the sub. You might be able to get something custom done where you get cut outs either in the tailgate so that the sub's are in the actual door if they are slim. That would be tight and I thought about doing it, but found a stealthbox that was cheap and the sounds is great. NO vibration either which was a big factor for me, I can't stand the sound rattling and wasn't trying to get it because of the sub.