The good news is that there are several places selling re-power motors for the 3xx series.
You can repower with either a Honda or a Briggs.
Google is my friend! (so is Round-up)
Always mindfull of obstructions, do your duty never fail. Keep your hands upon the throttle and your eyes upon the rail.
Never be arrogant.
Don't waste ammunition.
Whiskey makes you think you're smarter than you are.
Always, always make sure you know who has the power.
Don't mess with old men, they didn't get old by being stupid.