Rustler with monster truck tires. Possible?

Which MM system do you have right now? If you are already running it and have beefed up the tranny and other stuff, then you are probably good to go.

A buddy of mine, although I don't recommend it, is running a 4600 system on 3S lipo. It runs surprisingly well and with proper cooling measures, it runs at a nice cool temp too. He throws it in my face all of the time, because I thought he would have all sorts of problems. Just another reason why the 4600 is my favorite.

I think that going with a larger motor, like an L can Feigao, will result in lots of broken drive train parts. Even the L can motors are beasts.