I recently got a 2wd Stampede. I'd like to go brushless and had been looking at the castle sidewinder 3800kv combo. However, they recently released the Sidewinder 3 and it's bundled with the 4600kv motor.
I've heard that there is less you can do with gearing, and there may be more heat issues with the 4600 and less torque. However, the combo price is really good, and being waterproof is important to me. I'm not sure how big of a deal these compromises would be with the 2wd.
Let me know what you guys think. Thanks!