On you tube, I saw a guy who gutted out a origo two burner stove, and then put the burners from a coleman camp stove into it. Seems to work well for him.


If YOU choose to do this, please put a sign on your boat, so if you dock next to me I can move away. A Coleman stove, used below decks is a potential BOMB!! And I can only imagine what a bastardized one would be like.
Pressurized gasoline has absolutely zero place inside a boat. In the cockpit, perhaps, but NOT below.
Propane can also explode, but at least a proper propane installation has solenoids, to shut off the gas in the event a flame goes out. And still a few blow up every year, even with all proper safety gear.
Me? I still use kerosene stoves. For 40 years now. Might burn, but won't explode.