no, the X11 still has the original x11 ni-mih chassis configuration - making it accept a lipo is dead easy, and you only need to drill one new hole. I have used a Lazer ZX5 battery strap and post in mine without an issue.
the "radio plate" is also a great idea, I have one in mine - it means all the electronics can be removed from the car by simply removing 3 screws....and the best part is you don't need to drill any new holes!
