I have a 1979 model and I replaced the IC Igniter with 3 GM HEI 4 pin ignition module #40600 which can work with the magnetic pickups.
Its been over 3 years since I did this mode and I never had an issue what so ever.
These ignition modules are between $35-65 US depends on brand, I installed modules from JEGS.
I posted about it over 3 years ago and its somewhere in this forum
For me it is a good solution for this issue
The following user(s) said Thank You: scotch, Kawboy, StanG, shaddai, Ray13