Here is a pic of the body, as I showed in another thread.
I cut down the weight of my Civic body by gluing the bumpers, hood, and sideskirts in place, eliminating all of the screws except the rear body mount, and trimming away any unneeded plastic inside the body, particularly all of the posts where the screws used to attach.
Yeah, I'm silly like that.
Actually the rear bumper was done to fit the two additional cells, but I figured why stop there?
The two batteries fit in the spot where the velcro strip is located, and they rest on a small "shelf" that I made that extends from the back of the chassis all the way to the rear bumper. This setup has been race-tested, and stays put even in a rear impact.
The glue I used to fasten on the body pieces is slow-setting CA glue, specifically extra thick Maxi-Cure from Hobbytown. It cures in 10-25 seconds, and holds really well.