Dear Steve;
Okay then;
I would go with the Accel product, as the resistance may be 'mated' to the coil's primary winding and this IS 'an aftermarket' item. Also, look on the box/instruction sheet to see if one is required. Some coils have them 'built in' or have a 'heaver gauge' primary that stays 12V.
I wasn't aware there was such a varriance in (ballast) resistor values. There's no need to vary the size (resistance) of the primary winding much as the higher HV comes from a larger secondary etc.
There's a 60,000 volt (coil & resistor) combo on e-bay for under $20. But don't get "caught up" in the HV concept, as It's not that cold in Texas.
