[Purdy Swoft]

I've used the Pertronix flame thrower three OHM coil on my 12 volt model A's for years with good service and more power that I can feel . The black flame thrower coil is rated at 40.000 volts . The blue coil is rated at only 35.000 volts . The flame thrower coil is black ,normal size and is advertised to put out 5000 out more volts than the blue coil . I haven't tried the blue coil but the black flamethrower coil looks just like other replacement coils but makes a noticeable improvement in quick starts and power . The flame thrower coil has worked well with original style points for me .