Awsome job all round! Will you be taking it along with you to Silverstone next week (15th)? Might have to pop up & take a look
What did you use to get such a shine on your gearbox side plates - I polished up my TopCat chassis using a polishing mop at work & it looks great.... but I don't want to use the mop on the side plates as it 'dubs' over the edges, i've used varying grades of wet & dry paper (finishing at 2500 grit) & then a final polish with brasso... but they are not as shiney as yours
The Pro-diffs & later-style slipper assembly from the donor BossCat i'm sure will more robust with using the Brushless set-up.
P.S; Chalkie, what have you got waiting in the wings?