Hot Wheels Rocket Motor Clamp

Have you ever wanted to attach a model rocket motor to a hot wheels car? Well I do, I haven't tested it yet but this is what i came up with to attach the motor to the car in the simplest way possible.

All the screws and nuts are M3 besides the 2 used to close the rocket clamp, those are M2.5

CAD files included (I think you need to download all to see them)