No progress on mounting things, but I did get a chance to work on the electrical side of the setup. I grabbed the arduino, wrote a quick test program where it increments in 8.3% increments. This simulates 500 rpm increments of 0-6000 rpm. The same program will be run once the motor is installed on the car to measure the load of the water pump at the different rpms.
I made a video that shows this much better than typing out a ton of stuff.