Tom,

you may not have access to a mill but other on here will. It is very possible that you only live a few miles from another member that may be able to help with your project.

Since you have mounted the motors, the battle is 1/4 of the way done. Start by making the drawings of where you plan to put the mounts for the screws etc.

With a battle plan, just ask if there is anyone able to help you. You will seriously regret faffing about with half measures.

Regards