I had a Sidewinder 2 - not in a 410, but in a TRF201. It's footprint would be your main concern, so perhaps the ESC will fit on it's side? (Because it is pretty low).
That said, I wouldn't go for a sensorless system. I just stepped away from the Castle SV2/Castle-Neu 4600kV 1406 combo and switched to a
HobbyKing X-Car Sensored 100A/5200kV 6.5T combo - It is a HUGE step in performance: Scarily sensitive - I needed a few packs to get used to that - but now I have, I really like it! It helped me to find why all my jumps looked like drunk driving, it just seems the car listens better to the throttle trigger
And for a sub-100USD price there's nothing that touches it spec vs. price. I bought it after all the recommendations I got - I spoke with at least 3 experienced racers who drove (or had driven) one and didn't have any problems with it. If you go for the HobbyWing combo, it's footprint is nearly as big as the SV2, and with the fan on top it is pretty high too (I managed to make it fit in my car though)
