I have the 430 in my MTX-3. This engine is ballistic. Pulls all the way down the straight and had no problem getting the hole-shot. It had so much low-end that I barely used any throttle through the infield or it would overshoot the next turn.
I also have the 5 port turbo Rody, but have not went to a big enough track to run it yet.
I'll race electric when batteries smell like nitro.