I finally finished my system and am very happy with how it turned out. The xt25 tweeter and LH mid in a 2 way play very nicely with each other. The xt25 tweeter plays insanely low and is HP'd at 2500 Hz.
DSP'd channels
Tweeters - HP'd at 2500 Hz up
LH Mids - bandpassed from 70Hz to 2500Hz
NVX subwoofer - LP'd from 70Hz down
Stock - center channel and rear fill
The only thing I'm not a fan of is the NVX subwoofer but I'm going to replace it with an Image Dynamics IDQ 10 in the NVX enclosure.
I'll post up some of pics/info just in case this might help someone else out. One thing I learned was Sentry mode turns the car on all the time so you have to wire a manual toggle switch to turn off your amps after you park. A bit weird but not sure how anyone else is getting around that.
Tips:
1) wire an on/off toggle switch for your amps. The cigarette 12v fuse is located at the passenger kickpanel. Use a micro2 add-a-fuse here.
2) I had a really hard time trying to take out the A pillar. I ended up pulling them half way out and reaching to remove/add the tweeter.
3) There's a factory grounding point for the amps on the passenger side trunk.
4) Getting an amp/DSP is so worth it IMO.
5) I think I used about 30 ft of 4 AWG OFC cable for (2) amps.
6) I used Stinger 9 conductor wire on each side of the car. I used 4 pairs to grab the tweeter/mid signal and then another 4 pairs for speaker wire. On the right side, I used the 9th wire for remote wire.