First shot at custom chassis.

[maxair45]

I also did this for my rustler. I just used velcro to mount the rx and the esc. To mount th battery I drilledout a few holes and put a screw through the hole. I made a strap(made of lexan too of course) to go across and it would eb secured down by screwing a locknut on the screw. Wasn't the fastest way but It worked. You could always use associated battery cups(the ones the use for FLM chassis on rustlers).

Hope this helps