Cool running 20x45mm motor?

Hey guys. I just received my replacement motor for my Trinity NOW (it's actually not a bad truck once you set it up and loctite everything believe it or not; I hate Trinity too, so that has to say SOMETHING about this little guy).

The original rotor blew apart on me (using it in spec too; go figure- it's a feigao...). Anyways, these little motors are probably not enough for this 1/16 truggy, but I was curious as to whether anyone knows where I can find a really nice 20x45mm brushless (same size as these stupid feigaos). I was looking at the himax, and they look quite nice, and there's also the hyperion Y-22 motors. Any input on either of those motors?

I'm hoping that I can track a motor down that'll run less than 170F after a few minutes... I may not end up replacing the motor right away. Finding a summer job is proving harder than I anticipated...

Thanks in advance guys!

Edit: Or, if anyone knows where I can get a 13 tooth pinion instead of the 15 tooth that comes stock with this thing, that may help my temperature issues. I already have my settings turned down LOW on the mamba 25, including timing, start power, low braking power and reverse...etc.