So its update time again... This truck has gone thru a lot of changes since my last update. I am now running a Slipperential with center diff mount and custom lipo trays from RCM. I also picked up a 1520 when Castle had their sale going on a while ago. I thought the 1515 had torque, I was wrong. This thing is nuts! I'm running 10k in the Slipperential and it will still pull wheelies from a roll!