My vapextech lipo came today, juiced up to max she took 1600 mah and was sitting at 12.6v (11.1 1550 mah 20c cont. 40c burst lipo, not bad for £21.95 with free delivery). I'm afraid the rear diff may have given in to my rather rough driving style, however I managed to get in a couple of charges and 15 minute runs and more importantly a few w.o.t GLORY RUNS. I'd say she's running around 45mph, easy, with room to gear up comfortably. It's passing traffic at half throttle.
I have never, ever driven anything quite this brutal. I'm gonna stock up on diffs and keep running it like this, it's too much of a buzz not to. I'm also going to stock up on tires.
I think I may have been responsible for the diff letting go though, I must admit I've not bothered adjusting them (ball diffs) ever, so they were probably running real loose.

I'm aware the battery is far too large for the car, thank god for the twin graces of velcro and a tight fitting body shell eh?