TreeFarm

Have several questions, not 4th gen only, but this forum seemed most fitting since its what going in. Got a new sub/amp coming and will be in next week and was hoping for some advice from your past installs as I get ready to do some customizing in my trunk. Those of you who have subs in your trunk do you find it sounds louder/better if the subs fired toward the rear of the trunk versus toward the center and opposite side of the trunk in your 4th gen? Also is it a bad thing to have a fairly loud/low sub playing in your trunk if ya have a nitrous system on your car with the tank in trunk? And also along with that if it wouldnt be bad does the direction the sub facing matter in that situation with nitrous tank in trunk? And another about the nitrous tank, most times I seen the tanks installed with front of tank toward front of car, is that recommended for any reason or can tank be mounted running side to side behind seat, wouldnt think it would matter, but hey, never know. Dont have nitrous, but it is a consideration down the road maybe, so figure may as well ask now Any answers or advice on the above would be much apprieated.