I am going to have to go back and look at your build again for some ideas. I plan to fire the sub into the back seat as well. The shape of the trunk makes it interesting, that's for sure. Definitely need to leave that to a pro.

audio stuff is actually what spring boarded me into being a car junkie.lol before i could even drive i was working on car stereos and sitting in cars bumping the stereo in the garage lol.
I have done sub installs in a few years but i will tell you that bass is not like treble and you dont hear bass but feeling and bass frequences are actually louder the farther they are away... basically what im saying is that you dont what the sub facing the back seat, you want it facing towards the back of thbe car and the bass frequencewill bounce off the truck wall and will create a much louder "sound" at lower volume levels which in return will give you a much better sound quality whick imo is the most important.
i dont know what the factory kick look like, are they built for speakers or are you just gonna cut holes for them?
if you can get some custom ones make for not to much i would really go that route cause it helps alot with sound stageing if the speakers point towards the listeners ears and not right into thier foot.lol
if you need any help just give me a call im no pro and a little rusty but for the most part know my audio ****.

I have heard that it is best to fire them to the rear
 

but I was trying to keep my car quite as I could inside. I have dual 3 inch exhaust with an H pipe. The mufflers are 14 inches long and you can see straight through them. I knew I was not putting sound deadening in the trunk or carpet, so I put a thin piece of metal over the back and cut a hole for the sub to fire through. That way I could isolate the trunk from the cabin.

My sub box is very simple. basically a square with an angle to match the angle of the back seat. Mounted my amp to the box.

I have pics of what it looks like inside the car
 

but they are too big to post. If you like I could email them to you

I was thinking something very similar. :thumbsup:

Hi Todd
Are you going to have it done for the Lateral get together???
Mario

Done....probably not. I am hoping to have it complete minus the backseat, subwoofer box, and carpet int the trunk. The car will be there more than likely.

I need my car back on the road by next weekend for some cruises and Sema stuff. I now have the Heat/AC unit brackets and misc. to get it level and in the right position for ducts and hoses. With a shaved firewall and not wanting to breach it, things are more difficult.
I decided I wanted the combination of old school fresh air vents and modern AC and Heat. I have good memories of opening the vents in my 68 on a cool night. So it will have both. I installed the 4" JL's in the kicks and isulated the area behind the speakers.
Since the dash top was replaced by Prodigy Customs during the body restoration, the defrost vent mounts were missing. I fabbed up some brackets out of some roofing materials and they are exactly where they need to be.
http://i200.photobucket.com/albums/a...9/IMG_1150.jpg
http://i200.photobucket.com/albums/a...9/IMG_1142.jpg
http://i200.photobucket.com/albums/a...9/IMG_1133.jpg
http://i200.photobucket.com/albums/a...9/IMG_1137.jpg

I spent a **** load of time on the rear dash shelf getting it to fit decent. I trimmed the edges with molding. I also insulated it with the same material used on the floor. The JL 6x9's are in and it looks decent. I need some more molding to put in the cut outs for the roll bar. All and all not the proudest moment of the build but I think it's good enough.
http://i200.photobucket.com/albums/a...9/IMG_1145.jpg
http://i200.photobucket.com/albums/a...9/IMG_1143.jpg

Looks good to me!:thumbsup: