OH BOY, try "project moped manual", the ciao or vespa pages in the moped wiki, or moped riders assosciation (MRA) for a ciao or other vespa moped (same motor) and see if you can dig up a manual.
getting to the ignition is difficult on those bikes but totally doable. the manual will help.
another option is to look up "wiring in external condenser" and you can probably wire it in outside the stator and still have it work. basically you want the condenser body grounded and the condenser terminal to be in parallel with the wire from the magneto to the HT coil.