Here you can find the schematics
http://www.modelbouw.gompy.net/tci/
This is a modification of our CDI-ignition
http://www.modelbouw.gompy.net/newcdi/newcdi.htm.
It's a start, the PCB for this designe isn't ready yet.
For the bobine / ignitioncoil you can use any smal 12 Volt car / moped type of 4 Ohm.