LiPos for my dual BL?

[MetalMan]

You probably want something that can handle 80-100amps continuously (for both motors). 4s pack(s) should give the needed voltage. If you go with the Kokam 3200s, you may want to get 4 2s packs. On each side of the E-Maxx chassis, you could put 2 2s packs in series for 4s, so each side has a 4s pack.