New Savage Center Diff ideas......

[rcs2022]

I'm really liking the project, myself am still in the middle of something similar.
If you don't like wheelies and want more planted stance, definitely go with motor in front flipped backwards, thats what i did, and it drives really great! still need to update a video in my build.
What esc are you planning on using?
If you are going for mechanical brakes, the motor heatsink you modeled can be thicker to clear the brakes, then you won't be worrying about strength.
planning on machining it yourself or getting it done in a machine / cnc shop?