Pete,
I'll notch the edge of the kicker holes and run the wiring back up next to the installed speakers and run the wire under the carpet and back up to the dash for the remote tweeters. The Alpine X-Series Tweets are so teeny that they are easy to put just about anywhere.
Show some photos of your mod. I'm sure people would love to see that mod too!
I'd like to see a photo story of how you would put in the Lokar e-brake as well...