I trust my building skills so I think everything will be fine. I know how to add a second battery (I've done it before) but it was under the hood in a truck I've never ran one to the trunk. I thought fuses would be enough between the batteries from what I read max 18" away from each battery on positive and negative.
I've never trusted anyone to do an install for me and half the time when they do its messed up and I learn a little more fixing it. My alt can handle my current set up no problem and when I talked to Buick (Oldsmobile basically the same thing) they said a second battey would cause no real harm to my alt.
Also from what I hear I can make the box look however I want it to look as long as it has the right amount of space for the subs to breath.
Am I at least on the right track?
EDIT: Would a speaker baffle be sufficient sound deadening?
Also does this sound like a good deal I asked for a deal on a nice component setup and got this as a PM?
I've got a set of MB Quart PCE-216's. It would come with all the grills and mounting hardware also. $110 shipped to your door.
Also, I have a second set of MB Quarts that have been sitting around in case something went wrong with my main set. These are the same (2) 6.5" speakers, (2) 1" Tweets, but there is a Premium x-over and a Reference x-over (Main difference is the highs I believe). One of the tweets has a small dent, one of the speakers has a little stain on it, and one of the x-overs is missing 4 screws but both play fine. I don't think I have the grills or much mounting hardware for these though. I would sell these for $50 shipped to your door.
If you wanted both sets I would take $150 shipped.
EDIT 2:What do you guys think of this deck?
http://www.crutchfield.com/App/Produ...&tp=5684&avf=N
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*1987 Oldsmobile Ninety-Eight Regency Brougham.*
(deceased)
*2003 Ford Mustang GT*
just a CAI and Exhaust...for now