the corrally is a nice car, but for the price, the 12l4 is a really good car. and yes you need corraly wheels.
we have tried lipo in a 1/12 but was hard to balance. you are running 7.4 volt and then with no weight. it is like a mod with no weight transfer. but was a lot of fun. with lipol, you can only run 3.7 or 7.4v