Duane,
MSD makes 2 types of coils:
oil filled and epoxy filled. My ERA FIA Cobra had an
oil filled coil and it failed after about 2-3 years. Did some research and replaced it with an epoxy filled coil (#8222 high virabtion) 8 years later it is still running fine. My suggestion is to buy an epoxy filled coil.
Just my 2 cents worth, FIA Mike