Electronic ignition mounting plate for Conversion

I am reading over the installation instructions on my new ignition kit. One thing that gets my attention is the following statement: This system is designed for use with the enclosed ballast resistor and an OEM ignition coil, or a replacement with OEM specifications, primary resistance 1.4 to 1.8 ohms. Use of a lower resistance coil (C-D/MSD etc) or the ballast resistor jumped will destroy the ECU. With that being said, my current coil is a flamethrower coil. I do believe it would be best for me to change this. Can someone recommend a new coil?