Has anyone done something like a brushless mini-z yet?

I'm becoming bored, and am looking to do a small scale brushless project for the heck of it. Something cheap (which is why I'm looking at very small scales).

Already got a brushless micro-t that RIPS, but I'm looking for something a little larger and a tad more stable at speed to mess with in the dorms too.

Any other suggestions besides a mini-z?

What about an Xmod? Those are pretty dang cheap...

Keeping it on the cheap is key. I already have a spare Mamba 25 ESC, and a spektrum receiver, so that's all taken care of. I'd just need a motor and to modify the crap out of the chassis.