Besides for the chassis being way stronger, you can mount everything where ever you want. The most common and easiest set up seems to be the ESC in front of the rear shock tower, and the reciever on top of the steering servo on teh plastic cover. Then the battery right smack in the middle. You can use these to keep the battery in place:
http://www2.towerhobbies.com/cgi-bin...?&I=LX2778&P=7\
Sorry I don't have any pics.