Originally Posted by HighLife420

What size as in how many cells or size as in mah? If its cells (more cells more voltage) than its your ESC that will determine that. Some are rated for 1-2S, some 2-3S and some even higher. If you talking mah (run time per battery per say) than you shouldnt have any problem running as big as you can find. Might need to bend the strap a bit to get a really big one to fit. I have no problems fitting 5000mah packs in my car. Give me about 20-25mins run time with each fully charged.

I dont think you will see many people with a 2wd running rear sway bars. If anything, people mod the front RPM a arms and shock tower to add a rear sway bar to the front. Can check out teamsc10.com for some more tips and what not, can also find the video on how to do it. Not to terrible. Good info there on the sc10 too.