I put one on my 60 C10 passenger side door and had to use a stick on round convex mirror over the mirror to see the side of my truck. I just couldn't get it adjusted to see the side of the truck. It works fine and is definately better than no mirror. I didn't want to drill holes in my door either, and as mentioned in the prvious post they can scratch the paint when installing.
Joe


54 Triumph TR2(rhd)needs total resto.
60 Apache 10 stepside shortbed
99 Excelsior Henderson