1977 CB750F Starter Solenoid Mount

First go at a mount for the starter solenoid on my CB750 Build. dimensions are 77 mm wide, 45mm tall. The cylindrical section is 54mm in diameter, with a 9mm x 25mm channel in the back and a 9mm x ~12mm (I forget exactly) slot in the side to allow for the wires that go to the harness