I dont have the ignition yet, i didnt want to buy it until i was certain it would work.  I had a close look at the stihl engine, and i dont have anywhere to mount the sensor.  I guess on the back side of the engine, but then i will have to get a part machined.  So i think it will go on the poulan once i get it.
I like gas/glow, but its hard to get 10/10 glow fuel here, so it will be easier to just mix gas and oil.