It seems to me that at one point someone said the smaller Poulans like yours had the magneto mounting points for the coil cast on the engine housing. The larger ones have the coil mounted on the plastic saw part, so you either have to cobble up some kind of a mounting, or use electronic ignition which is what I do. The 42 & 46cc Poulans make great conversions. Pull your side cover off, and see how the coil mounts to be sure. It should make a good conversion.

Good luck,
Av8tor