I sell a kit that has everything you need to motorize the computer. No building brackets, no mounting drills or any of that stuff. Its complete and bolts to the bottom of your veeder root computer. I don't include any wiring because there are so many different ways to activate the motor, that I leave that up to the personal preference of the pump owner.
If you send me a PM with your email address, I will send you some pictures and installation instructions that detail the installation of the kit and you will be able to see how easy it is. It takes about 15 minutes to install the kit.
Here is a picture of the kit installed on the bottom of a pumps computer. Second picture shows all of the parts involved.