This is for the more advanced builders, you will need to use a rotary tool to grind down the bottom of the stock truck to fit the tube frame to be flush on the bottom. 
 
The bottom pf the truck can be drilled/removed and replaced with the tube frame. (It is up to you to make it fit.)
 
Fits most Greenlight long-bed trucks.
 
What you will receive:
1 - 3D printed pulling frame
 
Item will be shipped raw and unpainted.