I didnt see if this was already done before so forgive me if this is not new and I know this has probably been beat to death, but my solution to the front plate mount came from Home Depot. It is a steel framing tie made by Simpson part number 128T. Cost about $6 or so and found near the framing lumber isle. Two bends about 45 deg and drill one hole for the M8. Used some double sided foam tape along the bottom.