But they call them kick panels for a reason and you or your passengers will give them a beating...These cabs are so small some tweets placed in the dash or high on the door will give you nearly the same soundstage without the loss of legroom and annoyance of always being worried about kicking them...Kick panels only look good the day you get them installed...
Whatever you do install in your doors, be sure to use eDead, Dynamat or some other product that will dull the resonance your metal door will experience otherwise get ready for some rattles...
Below are some photos of when I was doing my stereo install..
Here are my doors, both interior sides are lined with eDead, speaker grills painted to match...
5-1/4's in dash painted to match dash
Tweets in dash
And some 8" subs to fill out the low end