Scotty, you probably know this, but for others reading.. Keep in mind that the ends of our bars have a welded-in threaded metal stopper, so unless those inserts are removable, you'll be doing some modding. I've had two sets on my bike and both times had to grind protruding bits with a dremel before being able to use a bolt to hold the mirror in place from the end.
You will also likely be left with a 1/8" space between the mirror and the end of the grip. I used a small section of black rubber tubing I had lying around - about garden hose size in diameter, and it looks great.
About the napoleon type mirrors on nfield.. AVOID them, they have horrible optics and on top of that vibrate like crazy. Actually, avoid almost everything on nfield.
I was lucky to find a pair of real Napoleons (now a defunct company apparently) and they are great.
Its been my experience btw that almost every mod I've done to my bike required some sort of modding, especially things from nfield gear which state they're designed for the c5.
Post pics later