Wacker engines has parts for the poulan.

http://www.wackerengines.com/Other.htm

I have a 25cc that will run 8000+ on a mas14x8k on gas glow,,,idle is a little high though.

I bought a 25$ ignition from hobbycity and will mount it sometime to see what it does for reliability. If it works good I might try it on a Dragon Lady but it is still a little heavy for that size plane. If I get really ambitious I might see about an oversize Quaker or something similar. Should be enough power to fly a BIG Quaker(12ft+?).