More like a brushless and lipo setup! That will get it shifting
It's not all about power. I've got a 15 year old (not much left original though) 1/10th nitro monster truck/stadium truck that I still regular use to bash with. To start off with it was originally a .15 engine, 2 speed and 4wd out of the box, but the drivetrain simply couldn't handle it even when new. Plus you could never really get up to it top speed before running out of space. So after having the 2 speed eat itself and paying £50 for a short shaft and bearing and have the metal diffs eat themselves at £30 a pop, I've converted it back to a single speed. Witch may well now not be as fast, but doesn't eat it's drivetrain with every half tank of fuel.
The same sort of thing with the Tamiya m03's both stand and quite heavily modified one. If I were to use anything lower than the 20 turn motor I'm already running in one of them, I'd be needing a new set of front tyres every run.