I reworked my rear motor support system with the other half of the HPI Flux motor mount I had left. The screw for tightening the clamp and the screw that goes through the bracket to support the motor are now on the same side and I think it looks better and cleaner. This system is working extremely well by the way.
You might notice that there's a little bit of a rough edge in the opening of the top chassis plate for the steering linkage. I had to grind a half a millimeter off to clear the linkage's ball cup. It was knocking on the side of the opening at full steering throw. I corrected the issue in my drawing and I also made the opening for the diff's output cup a little less deep so that there is more material left between that opening and the one for the steering linkage.
The more I play with this truck, the more I like it. The way it handles, the way it jumps, the power it has and how easy it is to work on. This thing should be named Permagrin.