Hi Tamiya Slave,
All the parts I used to mount the dampers came in the box with the damper kit (X parts tree IIRC), there are no 3Racing parts, aside from the tower itself.
Yes don't worry about the motor, it's only in there to check I've got everything built up right and for me to have a gentle run in, not raced for 8 or 9 years, so would prefer to play myself back in with something nice and slow. I already have a Peak Vantage 12 x 2 sitting in a box next to the car though...
Chris