I purchased one, and the mounting location of it just doesn't work. the dash needs to be sloped more so you can mount the display lower down. and the reflective pad can be lower to see on the windshield. I was able to run the cable from the opening where the collision warning light is down to the OBD connector but it just doesn't sit properly on the dash for it to look proper.
this heads up display projector helped me out really well with the set up