I have read good things about these ignitions on the discussion boards from people who should know. Remember you only get the analog version not the digital version that has multiple ignition maps that can be changed with a lap-top computer (that wouldn't exactly be period-correct would it?). Nonetheless if you have any doubts about your current ignition this might be the way to go instead of picking up another "un-known" one on eBay. I fortunately have a very reliable preferred E-model set-up so I have held off on this and put it on the "christmas list". John Astleford at
http://www.jastco.com will do the needed mods to your rotor cover, and
may be selling the ignitions too. Call and check.