Who has changed there factory sub in 3rd gen

[03 Limited 4.6]

Ok guys just bought a new deck today since my factory cd player stopped working and decided not to give my cd's back. This is the new deck i ended up going with since i wanted things to look kinda of factory and keep it simple. http://www.sonicelectronix.com/item_33452_Kenwood-DPX308U.html

Now what i was wondering is what sub have you guys used to replace out the factory sub in a 3rd gen and how do you like it?

I also plan on replacing the door speakers with these
http://www.sonicelectronix.com/item_34369_Alpine-SPR-68.html

So how do think this set up will sound.

Thanks, Joe