[suicideneil]

Depends what pinion you are using currently, but try 18 and see how it feels.

I would say you are wanting the biggest mah you can fit really, so 5000mah ideally, and 25-30c would be fine (not a terribly demanding setup, most people want more speed and power so they need more battery...). If you look at the hobbycity.com website, they have some nice hardcased 5000mah 30c lipos, or there is always the SMC or even venom (yuk) lipos with a hardace, not to mention all the items Mike sells in the rc-monster store. Depends on your budget really, but done let me sway you too much, I just know that a 20 minute final race is gonna need fairly big mah batts to last the full time without stopping for a battery change. I dont suppose you could measure the insides of the battery trays, that might give a better idea as to what will fit and what wont.