Ignition conversion

Hello fellow Vespa lovers,

 

I'm posting this for my dad who owns a 1957 Vespa (Piaggio) Grand Sport 150 cc T3. He would like to use the conversion kit (SIP-Scootershop #: 50025000) but is not sure if the conversion from the magnetic ignition is possible. Maybe some of you have done this? Please share any comments or experiences, I'd appreciate it.

My dad also gave me some measurements:

mounting plate with coils diameter 115.5 mm

crankshaft conus goes from 17 to 11 mm, length of the conus is about 32 mm.

If you prefer to answer in German, kein Problem.

 

Thank you very much!

Boris