I do have the tools that can allow me to create a strong metal arm to hold, and adjust the position of the motor. This arm is only attached to the truck, and will move freely up to down and side to side. I don't want to compromise the back truck because the motor in the front allows for a partly lit interior, and the fan and smoke unit could be moved to the baggage section.
I pushed the motor car around curves and on a 036 curve, it works fine. I will have to add a little weigh for added traction, but what I wanted to ask on this post is if there is journal box or something like that would make completing this easier.