Yeah, I could do the separate 3s packs still, but I have a feeling that 5s on a 9xl will be more than anything I've ever driven anyway. Not looking for full on nutso speed (wouldn't mind that along the way though ;) ), but high acceleration, speed to hold off the nitros on the straight, and runtime to rival about 2 tanks of their fuel........think I heard that Squee or somebody got 25 minutes of runtime on GP3300's so I should be able to squeeze 30 minutes out okay.