Ok here are the preliminary 3D images.
I will be making a spacer plate to add more weight for those using lighter Lipo packs with the bumps on the bottom. I will sell them as a set or seperate, just in case someone uses only larger packs without the bumps.
The tray will have cutouts for the bumps in order to get the pack as low in the chassis as possible.
Notice the recesses for strapping tape!