Sounds great Jeff. I will give you some measurements when I get a chance tonight.Yes it will make a MASSIVE difference in your audio quality and if you are not used to listening to a aligned system it may sound weird to you at first but once its dialed it it should sound great.....but as I mentioned in the first post, if you dont know what you are doing it you can really screw things up too!.....but its not something to be afraid of....you wont break anything, wrong settings just sound bad. If you dont like the way it sounds just set it back to 0.
Yes it will be at the detriment to the passengers.
Lets do an experiment. Sit in the drivers seat, in your normal driving position, use a tape measure to get the rough dimensions from the tip of your nose to the center of each woofer. Email me those dimensions and ill make a guesstimate as to what your settings should be and explain what you should be listening for when you dial it in.