I know you built it right hehe . If you alreaddy have a built savage xl, then just get the center diff. I would go with a lower kv motor for lower temps and more torque. For bashing sensored is also nice I think, I do feel differance between sensored and sensorless. 2200kv on 6s gets very hot, mine does that and my truck weight 14.6lbs, so I need to have those custom cooling fans to keep temps in place. But I would like to have more torque as well. The only reason to get the castle 2200kv is for the new sensored motor and mamba monster x, otherwise I would recommend a tekin 1700kv.