opinions requested

Sorry for the confusion, I was responding to kfr401 and his comment ...."I'm finding that car audio is an excellent way to decompress" Ask him this again in 15 years....

I doubt I'll get too sick of it.  Home and car audio are just hobbies for me, not a career.  Forbidden, I can see how you'd get sick of actually being involved with the industry, especially after owning a couple stores.  You must still find some joy in it ... otherwise I doubt you'd be hanging out here.  :-)

Yup, there are definitely the good days, like today. BC is not British Columbia, it's Bring Cash..woohoo...

I also wanted to comment on this.  It is an excellent idea, especially for the doors.  You'll probably want to double up.  Also, I don't know what the stock speaker bracket is like in your Scion, but my install greatly benefitted from making a 3/4" MDF bracket for my 216's.  I also bought some deflex pads to put behind the speakers to kill standing waves. 

On the topic of damping material, it will serve you well to buy a roller and a cheap heat gun from the start.  I have found http://www.raamaudio.com/ to be the best value in damping material.  It is slightly more expensive than regular dynamat but MUCH MUCH easier to work with and a better damping product.  (Important for someone as busy as you, I'm sure). 

Let us know what sub you decide on.  Cheers.

-The Scion TC has some funky speaker openings, They're 6.3" (yep, 6.3, not 6.5) in the front and 5.2" in the rear. I've read in a bunch fo places though that they have good depth though so I was plannign on making a 1" MDF spacer to get the quarts to fit. Thanks for the heads up though. glad to know someone else was thinking the same thing.

-As for the dampening mateiral, I got a wicked good deal on the dynamt from a buddy of mine who works for a local audio store. Got the stuff at cost. As for the roller and heatgun, I have those things from an install on a previous car, so I'm good to go there.

-I will let you all know what I decide sub and enclosure wise. I'll probably go with either the JL 12w3, the koda 10/brahma 12, or the image dynamics. I'm thinking of breaking down and having the local tweeter make a custom fiberglass enclosure for a single 10 or 12 that molds into the left side of my trunk. Trying to minimize the amount of space taken up by the sub. I'll post pics/link to pics either here or in another thread when I have it installed. Might be a bit though, dough and time are short right now.

I'd like to third the motion on Image Dynamics. I wouldn't go with a MAX in your case, though. An IDQ would do quite nicely. With the Q's, the 10" is rated at 250 watts RMS, and the 12" at 350 watts, whereas the MAX's are both rated at 1000 watts RMS. It wouldn't do them justice to run then at 300 watts or less. The enclosure size is another plus. The 10" will be happy in anything down to .3 cu.ft. (although you probably wouldn't be happy with the sound in that small of a space) or up to .7. I run mine in .6 cu.ft., and it sounds great.  Here is their site: www.imagedynamicsusa.com

Also, good choice on the Quarts. I used to have some QSD216's (or QSC or something like that) untill someone made me an offer I couldn't refuse. Now, with the DSC's, It still sounds really good, but it's probably because the Q's weren't properly powered at the time, and the D's are. I'll be getting rid of those soon, though, after I get some listening time to some other brands that I've heard good things about.  I think you said you have the P's? You should be very happy with those.

Sorry so long, haven't been on a good ramble in a while, lol.