So tonight I was able to take a closer look into the signals and it doesn't look great. The rears could work with an additional large washer, but they won't be mounted with any rubber between the signal and base like the factory. Looking at Japanese model CB1100s, their factory signals definitely had a separate removable rubber base compared to the integrated rubber base on our signals.
The fronts are a whole different challenge unless you plan to make a permanent modification to the stock mount. Even then, the signals won't sit very flush and will actually look out of place. Hopefully someone with more experience or mechanically inclined can chime in. I'd really like to be able to run these new signals.
[url=http://imageshack.com/i/my2ts3j/]
[url=http://imageshack.com/i/mqygxhj/]
[url=http://imageshack.com/i/gvi13pj/]
[url=http://imageshack.com/i/g4841tj/]
[url=http://imageshack.com/i/nfzve7j/]