Great you have access to a 3D printer. What machine do you have?
Print To 3D (my company) has some parts in production as a type for my team.
No paint though. I've got orange ABS :-D
Some of the parts are (only a few shown in the photo):
Twin 775 motor mount
Pneumatic cylinder mounts for transmission shifting
Shaft spacers for transmission
Sensor mounts
general spacers