Its a kick *** .21. I use the jp-1 and jp-2 pipes. Dont forget the extra glow plugs, ninja ones. I just passed gallon 2 on mine and it performs well. It launches my truggy and runs with the modded modelds out there.
The .28 is due out today, Ive had it on back order for 3 months now. I too am working on a mbx5t prospec, round one of the pro series starts in 4 months