You'll only mess something up if you're rough with it. Keep in mind that the plastics are really old and often brittle. If something isn't loose, don't yank on it.
There are 6 bolts holding it to the chassis; 2 on the left, 2 on the right (one behind the door vent, one underneath the dash), one in the center under the windshield, last one in the bottom of the console. You'll need the speed sensor cable pulled out from the back of the tach cluster and the steering rack dropped as well (I think 4 bolts hold it in). OF course, the radio and crap need disconnected.
I got a new shell, just need to stop driving the DX so I can work on it.
I've got a filter for my mouth, it just isn't a good one.