Thanks so much for all the approving responses! I went over to the shop today and had a good listen. Man they make some nice stuff.
Here's the thing. I stupidly listened to both of these on his recommendation:
http://www.bostonacoustics.com/ca_product.asp?ProductID=216&CategoryID=14
http://www.bostonacoustics.com/ca_product.asp?ProductID=296&CategoryID=14
Now those are some nice speakers! If you have a look at both of these, you see that they COME with 5x7 adapters in the box.
What I am now thinking is getting a matching set of these (either one, obviously one is considerably more expensive then the other, but you can tell

).
My question is this... Do you think that these could mount behind the factory grills in the doors? With that tweeter holder, it looks like they may stick out a ways. What do you think?
The other thing, is that I know every one says the rear is just for fill, but I really like to be surrounded by the sound. With my stock speakers I have the fader fairly far to the back. This makes the sound seem "even" to me. I was thinking that by going with a matched set, I would get that while leaving the fader in the middle.
The other thing is that Boston
HIGHLY recommends
AGAINST mounting the tweeters any where further than a few inches away. Specifically they said NO SAIL PANELS!!! The guy said that their speakers were so highly engineered that if you imagine listening to a drum solo, the snare would sound like it was coming from below, and the cymbol would sound like it was coming somewhere else completely.
My friend gave me a demo of this in a "car" they have set up in the shop. He switched between the tweeter locations, and I'd have to agree.
Sorry, I have kinda made up my mind to get either of these, just thought I'd ramble on for no good reason!! I really wouldn't mind some feedback though. And I would definitely like to know anyone's opinions about the space behind the door grills!
Thanks a lot everyone!