Tubs, does great work!!! I enjoy his resto pics and projects 🙂
Check to see if you have a version magneto has the 5/8″ lamination, if so then the OMC coils are not a quick switch. It can be done with laminate modification. If magneto design uses black plastic covered coils with 7/16″ center lamination. These coils are quite often cracked and may require replacement. The 7/16″ center lamination with accept a 1950s style OMC coil core.
This link will help 🙂
https://www.oddjobmotors.net/tt1_replacewico_coil.htm
Cheers,
Cajuncook1