I am slightly concerned about no upper deck bracing to help the center diff & spur area from coming even a teeny tiny bit loose. On my 44.1 .2 & .3 , I would always loctite the center area mounts, but it seemed the upper deck bracing played a part in keeping the spur alignment perfect and slop free.
I wish this car was coming out sooner so I could build and play with it over the Xmas & New Year's break!