Charley
You have to remove the swedged nuts on the backing plate that mounts the stock bracket, I tried drilling the threads but with the angle the bolts have to go into the Stealth its easier to remove them. About 1 hour frustrating myself before I figured that out. I had to cut longer mount bolts to fit (the supplied bolts are too short if you use the backing plate and in my case the plastic washers). This is the step that takes the longest, you want the bolts to go almost all the way into the Stealth without bottoming out when tightend. When you do these 2 things its a cake walk to assemble, I also used blue loctite on the mount bolts. If I decide to ever mount the stock plate bracket I will just use longer bolts with washers and locknuts.
Hope this helps