The modifications planned and detailed below were never made because within 1500 miles, mounted as seen above (without any modifications) the luggage rack broke on both sides.

Trunk angle and distance from seat are too great.

The 'side plates fit perfectly to the fender bolts and are very well made and pretty.  But the angle of the sissy bar support is greater than ideal for my Kawasaki 2002 Vulcan 500. It appears to be about 20 to 25 degrees. The solution is, I think, simple: drill one or two more mounting holes on the sissy bar attacher to change the angle of the luggage rack closer to parallel.

The position and angle of the 'Sissy Bar' back of the trunk is too great to make it safe for a passenger (a sissy?) to use it. New lower side plate holes to move the side plate forward by 1.75" will help. New holes in the upper part of the side plate will bring the rack back to horizontal and also help by moving the top of the trunk forward about 1.5" for a combined forward movement of about 3.25" at the top. Not ideal but better..