I managed to fit a Boyer Micro Power in my can.
I was trying to unlock a poorly performing twin plug set up with bodged bob weights and lobster claw coils so the fact that Boyer unit included coils was a big factor.
The Boyer comes complete with coils and plug leads, for a twin plugged bike has a better digital curve, and as a bonus with the coils and leads it costs less than the Siemens does without .
That was eight years ago and it has been fit and forget, although I did follow the instructions, something most motorcyclists seem reluctant to do------------.