Sort of a two-parter.

I realize this isn't a particularly strong engine, but feel like it
still doesn't perform as well as it should.

A) Does anyone know what the factory prop was for this engine (1990)?

(B) Does anyone have any suggestions for getting a bit more HP out of it
for a reasonable price? Have searched for electronic ignitions, but the
few I've found out there are stupid expensive.

Thanks,
Mark