Only $125........thats about average for their product....Yes I think they do use some of the existing coil setup for this particular engine check their website or e-mail them and ask.
I havent used one but by all accounts the RC IGN set up works just as well,and I beleive the installation is neater and housed behind the engine.Its also guarenteed for life I think ......he is also a Zenoah dealer,racer,and contributor extrordinaire to websites like RCU,and probably deserves more of our business than I suspect he gets......Im going to try his product next time I convert an engine......