http://www3.towerhobbies.com/cgi-bin...&I=LXTCK1&P=FR
http://www.hobbycity.com/hobbycity/s...25C_Car_Lipoly
http://www3.towerhobbies.com/cgi-bin...&I=LXWSS0&P=FR
i would get the smc if at all possible because it is much better quality. But the zippy packs are decent. If you are running the stock esc you will also need a lipo cut off device.