Momba monster 2 or the 8th? Installed the monster in both my Kraton and Talion. Awesome speed and power, you will definitely need a wheelie bar. Also you will need to take the faceplate off the castle and drill and tap to M4, very easy to do. I recommend getting the castle ESC also. You will be able to run 3,4,5,or 6s. And you can program it with castle link. Stick with the monster, the 8th easily burnes up.