I have to admit, $150.00 VS Bore Techs $389.00 is a huge difference.
For me, the decision was made based on, not only the "bolt on" aspect, but also the fact that it gets rid of the mechanical advance by providing a programmable electronic advance curve. It also incorporates a rev limiter and a port for an electronic tach.
Bore Tech claims this is a "set it and forget it" bolt on operation that should take less than 30 minutes.
When I asked other AHRMA racers, Bore Tech was the only response I got except for one fellow that made his own and wanted $402.00 (402??-- I didn't ask how he came up with that price).
FWIW, here's the response I got when I inquired a few months back:
Thank you for your interest in Dynatek ignitions. Unfortunately, we do not
offer an ignition system for this model at this time. I might suggest calling
Charlie's Place in San Francisco, California, at 3084 17th Street and (415)
255-0316 as I understand they offer a custom version of our Dyna S ignition
system for these older Honda twins. If we can be of any further assistance,
please feel free to contact us anytime.
Thank you,
Scott Valentine
Customer Service
Dynatek
1-800-928-DYNA (3962)