[C. Ludwig]

The Mercury inductive coils have an output of somewhere between 120-150mJ depending on who's literature you look at. They're what Electromotive use for their DIS systems and they claim 150mJ. That's the hottest inductive coil I'm aware of. I've used the TTL version with great success on a couple rotarys. Love these coils! A 3.5ms charge time will get you 90+% saturation. Should have more than enough energy even at partial saturation to ignite an NA mixture. The LS-2 coil is supposed to be around 120mJ but requires around 6ms of charge time to get there.

Bosch Motorsports does show several inductive coils with built-in ignitors. The highest output rating is 100mJ and it's a COP coil. Would be interesting to try.