What I was getting at on the Dyna electonic ignition is the fact that it has to be modified to fit under the 450's point cover and still be timed correctly. That voids the warranty for those that care to have a warranty. Plus if you're not careful when modding it to fit properly, you can screw it up easily and it won't work at all. The Hondaman unit makes the most sense as far as $$$ is concerned and can be easily fitted. It's not an electronic ignition, but makes the points last a long long time by just using them as a trigger.
I have two different sets of PDF instructions on modifying the Dyna EI, and you must remove material from the hall sensors themselves then re-seal them, which would more than likely shorten its lifespan, but no one really knows. Plus you have to remove material from the baseplate and possibly source different buttonhead style bolts to hold it to the points base.
There are lots of alternatives besides the Dyna is what I'm saying, that don't need modded to fit, and work just as well. If you simply must have EI then there are Boretech, and Pazon just to name a couple.. There are others....
If you wanna go "full race" then:
http://cgi.ebay.com/ebaymotors/HONDA-CB ... 0231532935
Just trying to help guide others here to their alternatives mate.
GB :mrgreen: