Currently, I have a pair of 4" CDTs up front with a pair of 3/4" CDT silk dome tweeters, and out back is a pair of CDT 6 1/2"s powered by a Kenwood V12 amp with a Pioneer Ghost Face headunit.
As soon as I get around to building the custom box, I'm going to have a pair of Pioneer 6x9s and another pair of CDT 6 1/2s in a box powered by a Harrison Labs amp. I have the speakers for the box, I just haven't drawn up plans nor have I gotten the MDF for a good box.
PS: Any of you guys looking for a Kicker L7 8" sub in the Kicker ported box? I have one sitting in my closet. It's in perfect condition and was only used for about 6 months.