LMT 1920 big enough for Rustler or CRT 5.?

[Finnster]

Holy hell, the motor works well on 4S! Destroys my 380C/6L motor. Not sure how fast it will do as WOT=flips, even at high speed. Did a 40mph cartwheel that went along way down the road when I gunned it too hard. Prolly at least 10-20 rolls. lol That's what a $200 motor buys you.

I know it will sail past 50, but the Rustler is too sloppy a rig to take it now. Needs quite a bit of work, its been pretty beat up on the last few years and all the plastic joints are a bit stretched out. The CRT calls......