Bypassing Ballast Resistor / Installing Pertronix Ignition

Instruction sheet for Ignitor II: http://www.pertronix.com.au/assets/pdf/Pertronix_Ignitor_2_Installation_Instructions.pdf
It has dwell control (GM's HEI) and can use a low-resistance coil (down to 0.6 ohm), such as their Flame-Thrower II. No ballast or "ballasted coil" (~3.5 ohm internal resistance) required or desired.

Pertronix also sells an e-core coil (Flame-Thrower HC), which is similar to the 1985-95 GM HEI coil and the Magnum V-8 coil. It looks suspiciously and exactly like an e-core coil I bought on ebay for $20, but priced $90 and mine is a purtier blue anodized. The primary resistance is 0.32 ohm, which is likely why is isn't listed as compatible with their Ignitor II or III, only with their Digital HP Ignition Box. I didn't measure the primary resistance of my cheap one, nor a GM or Magnum, because hard to measure such a low resistance accurately and it changes as the coil heats. I am currently actuating the e-core coil by a Ningbo small-block distributor with internal 4-terminal module and it hasn't failed.