HEI conversion question

The Blaster SS is probably the #8207 E core coil. A great coil with a powerful punch in a small package. The worst E core coil is better than the best canister coil because with a canister coil there is no real return path for the magnetic field. The MF just radiates into the atmosphere, lost forever, & never gets turned into spark energy.

There is a reason you do not see canister coils on modern cars.....