Do you have a crt.5? I had a brushless jato and did not care for it, too light in the rear. I had traction issues and never really had much fun with it. I prefer 4wd, for stability and braking power.
I have a 1920/10 on 4S in my Rustler and it is over the top fast, even with mashers on it pulls 40mph wheelies and goes ~55mph. The jato will be lighter, so there is no reason it shouldn't work. If anything it may be too much power for 2wd on 4S.
I have a CRT.5 I'm building that it will go into. Can't wait to run it.