Looks great. I've been following this for quite some time. My intrest is to do the two receiver boxes but also modify a dirtbike hitch holder. The ones that hold the bike perpendicular with the trunk. The two hitches would give it better stability from tipping from the standard straight single hitch.

So I am going to cut off the single hitch from the center of the dirtbike rack and put two on either side to line up with the two receivers. Can't we use two universal boxes that just have re mounting plate welded on top rather than the traditional tubular brace that's car-specific? Would you mind taking a few angles of pictures of your receivers mounted to the frame underside of the car? It would be much appreciated!!